context: A man in a gray shirt and green tie is working with his computer at his office desk.
hypothesis: We believe that a man in a gray shirt is working on a novel.
valid_hypothesis: There is almost no chance that a man in a gray shirt is working on a novel.
invalid_hypothesis: We believe that a man in a gray shirt is working on a novel.
hypothesis_assertion: A man in a gray shirt is working on a novel.