context: A man in a plaid shirt and brown pants is sitting on the sidewalk in front of some blankets while people walk by.
hypothesis: It is almost certain that a man is sitting on the sidewalk, waiting for his girlfriend to show up.
valid_hypothesis: It is impossible that a man is sitting on the sidewalk, waiting for his girlfriend to show up.
invalid_hypothesis: It is almost certain that a man is sitting on the sidewalk, waiting for his girlfriend to show up.
hypothesis_assertion: A man is sitting on the sidewalk, waiting for his girlfriend to show up.