<human>:  How many characters are there in the French play ‘Madame Estreya’?
<bot>: There are three main characters: the Countess, the Count, and the Countess’s maid. The Countess is the main character, and she is the one who is in love with the Count. The Count is the Countess’s husband, and he is the one who is in love with the Countess’s maid.