<human>:  I want to build a small greenhouse. What materials are needed to construct it?
<bot>: To construct a small greenhouse, you will need building materials such as wood, plastic sheeting, nails, screws, glass, and silicone caulk. You will also need tools, like a hammer, saw, drill, measuring tape, and level. Additionally, you may need soil, plants, pots, and other gardening supplies.