Are the words below singular nouns if not what form is it?
Hospital’s Donkey’s Prisoner’s

Alberto is reading a myth. he wants to learn about the cultural context of the myth-tellers. to do so, he will write a question about each of the four aspects of cultural context. he has written the following question: what kinds of ceremonies or celebrations did the people of this culture practice? which aspect of cultural context does the question address? lifestyle setting customs values