Detailed Instructions: You are given a concept, and a list of answers. You should generate a question about the concept that leads to the given answer(s).
Q: concept: Philadelphia answers: ['Philadelphia Zoo', 'Wagner Free Institute of Science', 'African American Museum in Philadelphia', 'Liberty Bell', 'Rodin Museum', 'Independence Hall', 'Boathouse Row', 'Academy of Natural Sciences', 'Reading Terminal Market', 'Franklin Institute']
A:
what are fun things to do in philadelphia?