Instruct: Given a legal statement, retrieve articles that support the statement.
Query: 
An underground space or airspace may be established as the subject matter of superficies for ownership of structures, through the specification of upper and lower extents.


Article 269-2 (1) An underground space or airspace may be established as the subject matter of superficies for ownership of structures, through the specification of upper and lower extents. In such a case, restrictions on the use of that land may be added in the act that establishes superficies for the purpose of facilitating the exercise of the superficies.


Article 295
(1) If a possessor of a thing belonging to another person has a claim that has arisen in relation to that thing, that possessor may retain that thing until that claim is satisfied;provided, however, that this does not apply if the relevant claim has not yet fallen due.
(2) The provisions of the preceding paragraph do not apply if possession commenced by means of a tortious act.
Article 303
The holder of a statutory lien has the rights to have that holder's own claim satisfied prior to other obligees out of the assets of the relevant obligor in accordance with the provisions of laws including this Act.
Article 388
If the land and a building on that land belong to the same owner, a mortgage is created with respect to that land or building, and the enforcement of that mortgage causes them to belong to different owners, it is deemed that a superficies has been created with respect to that building.In this case, the rent is fixed by the court at the request of the parties..


Article 221
(1) A landowner may use a structure installed by the owner of higher or lower land in order to cause water from the landowner's land to pass through that land.
(2) In the cases referred to in the preceding paragraph, the person using the other person's structure must bear the expenses of the installation and preservation of the structure in proportion to the benefit that person enjoys..


Article 266
(1) The provisions of Articles 274 through 276 apply mutatis mutandis if the superficiary must pay periodical rent to the owners of the land.
(2) Beyond what is provided for in the preceding paragraph, provisions on leasehold apply mutatis mutandis to rent to the extent that application is not inconsistent with the nature of the same..


Article 280
A servitude holder has the right to use another person's land for the convenience of their own lands in accordance with purposes prescribed in the act establishing the servitude;provided, however, that this right must not violate the provisions (limited to those that relate to public policy) under Section 1 of Chapter 3 (Extent of Ownership)..


Article 400
If the subject matter of a claim is the delivery of a specific thing, the obligor must retain the thing with the due care of a prudent manager, which is determined in light of the contract or other sources of claims and the common sense in the transaction, until the delivery..


Article 266
(1) The provisions of Articles 274 through 276 apply mutatis mutandis if the superficiary must pay periodical rent to the owners of the land.
(2) Beyond what is provided for in the preceding paragraph, provisions on leasehold apply mutatis mutandis to rent to the extent that application is not inconsistent with the nature of the same..


Article 184
If a thing is possessed through an agent, the principal orders that agent to thenceforward possess that thing on behalf of a third party, and that third party consents thereto, the third party acquires the possessory rights.
Article 344
The creation of a pledge becomes effective through delivery of the subject matter of the pledge to the obligee..


Article 370
A mortgage extends to the things that form an integral part of the immovables that are the subject matter of the mortgage (hereinafter referred to as "mortgaged immovables") except for buildings on the mortgaged land; provided, however, that this does not apply if the act establishing the mortgage provides otherwise or the rescission of fraudulent act may be demanded as prescribed in Article 424, paragraph (3) with regard to the act of the obligor..


Article 304
(1) A statutory lien may also be exercised against things including monies that the obligor is to receive as a result of the sale, lease or loss of, or damage to, the subject matter of the statutory lien;provided, however, that the holder of the statutory lien must attach the same before the payment or delivery of the monies or other thing.
(2) The provisions of the preceding paragraph also apply to the consideration for real rights created by the obligor on the subject matter of the statutory lien..


Article 387
(1) A registered lease may be duly asserted against mortgagees that hold mortgages registered prior to the registration of that lease if all mortgagees that hold those mortgages give their consent and those consents are registered.
(2) For a mortgagee to give the consent referred to in the preceding paragraph, the approval of the persons that hold rights for which the mortgage is the subject matter and other persons that will suffer detriment as a result of the consent of the mortgagee must be obtained..


Article 611 (1) If it comes to no longer be possible to use or profit from part of a leased thing due to grounds such as loss and this is caused by grounds not attributable to the lessee, the rent is reduced in proportion to the value of the part that can no longer be used or profited from.


Article 225
(1) If two buildings are owned by different owners and there is an open lot between them, each owner may install a fence on the boundary, sharing the expenses with the other owner.
(2) If no agreement is reached between the parties, the fence referred to in the preceding paragraph must be a wooden fence, a bamboo fence or a fence made of similar material and must be two meters high..


Article 179
(1) If ownership and another real right on the same thing are acquired by the same person, the other real right is extinguished;provided, however, that this does not apply if that thing or the other real right is the object of the right of a third party.
(2) If a real right other than ownership and another right for which that real right is the object are acquired by the same person, the other right is extinguished.In this case, the provisions of the proviso to the preceding paragraph apply mutatis mutandis.
(3) The provisions of the preceding two paragraphs do not apply to possessory rights..


Article 605
A lease of immovables, when registered, may be duly asserted against a third party such as a person that subsequently acquires real rights with respect to the immovables..


Article 187 (1) A successor to a possessor may, as the successor chooses, assert either the successor's own possession only, or the successor's own possession together with that of the predecessor.


Article 606 (1) A lessor assumes an obligation to effect repairs necessary for using and making profit of the leased thing; provided, however, that this does not apply if repairs are necessary due to any grounds attributable to the lessee.


Article 295
(1) If a possessor of a thing belonging to another person has a claim that has arisen in relation to that thing, that possessor may retain that thing until that claim is satisfied;provided, however, that this does not apply if the relevant claim has not yet fallen due.
(2) The provisions of the preceding paragraph do not apply if possession commenced by means of a tortious act..


Article 243
If two or more movable properties with different owners can no longer be separated without damage due to accession, the ownership of the composite thing belongs to the owner of the principal movable property. The same applies if excessive expense is required to separate the movables.
Article 248
A person that suffers loss because of the application of the provisions of Article 242
through the preceding Article may demand compensation in accordance with the provisions of Article 703
and Article 704..


Article 221
(1) A landowner may use a structure installed by the owner of higher or lower land in order to cause water from the landowner's land to pass through that land.
(2) In the cases referred to in the preceding paragraph, the person using the other person's structure must bear the expenses of the installation and preservation of the structure in proportion to the benefit that person enjoys..


Article 177
Acquisitions of, losses of and changes in real rights on immovables may not be duly asserted against any third parties, unless the same are registered pursuant to the applicable provisions of the Real Property Registration Act (Act No. 123 of 2004) and other laws regarding registration..


Article 400
If the subject matter of a claim is the delivery of a specific thing, the obligor must retain the thing with the due care of a prudent manager, which is determined in light of the contract or other sources of claims and the common sense in the transaction, until the delivery..


Article 129
While it is uncertain whether or not a condition will be fulfilled, the rights and obligations of the party concerned may be disposed of, inherited or preserved, or a security may be provided therefor, in accordance with the general provisions..


Article 330
(1) If there are competing special statutory liens against the same movables, the order of priority follows the order set forth below.In this case, if there are two or more preservers with respect to the statutory liens for preservation of movables set forth in item (ii), a new preserver has priority over previous preservers:
(i) statutory liens for leases of immovables, lodging at hotels and transportation;
(ii) statutory liens for the preservation of movables; and
(iii) statutory liens for the sale of movables, the supply of seeds and seedlings or fertilizer, agricultural labor and industrial labor.
(2) In the cases referred to in the preceding paragraph, if a holder of a statutory lien ranked first knew at the time of acquiring the relevant claim of the existence of a holder of a statutory lien of the second or third rank, that holder may not exercise the relevant rights of priority against those persons. The same applies to the exercise against persons that have preserved things on behalf of the holder of a statutory lien of the first rank.
(3) Regarding fruits, the first rank belongs to persons who engage in agricultural labor, the second rank belongs to persons that supply seeds and seedlings or fertilizer, and the third rank belongs to lessors of land..


Article 281
(1) Servitudes are transferred together with the ownership in the dominant land (meaning the land of a servitude holder, enjoying benefits from another person's land; the same applies hereinafter) as appurtenances thereof, and are subject of other rights that exist in relation to the dominant land;provided, however, that this does not apply if the act establishing the servitude provides otherwise.
(2) Servitudes may neither be transferred nor made the subject of other rights apart from the dominant land..
