context: A man stands on a dock near several boats, while 2 other men are on one of the boats.
hypothesis: There is a very good chance that a man with brown hair is standing on a dock.
valid_hypothesis: It is probably not the case that a man with brown hair is standing on a dock.
invalid_hypothesis: There is a very good chance that a man with brown hair is standing on a dock.
hypothesis_assertion: A man with brown hair is standing on a dock.