context: A man with dark hair and brown skin is in a dark room with his hands on some equipment.
hypothesis: It is probably the case that a man is developing pictures in a dark room.
valid_hypothesis: It is probably the case that a man is developing pictures in a dark room.
invalid_hypothesis: It is probably not the case that a man is developing pictures in a dark room.
hypothesis_assertion: A man is developing pictures in a dark room.