context: A man in a green shirt and black hat is smoothing concrete.
hypothesis: There is almost no chance that a person is resurfacing the sidewalk of a well known street.
valid_hypothesis: There is almost no chance that a person is resurfacing the sidewalk of a well known street.
invalid_hypothesis: There is a very good chance that a person is resurfacing the sidewalk of a well known street.
hypothesis_assertion: A person is resurfacing the sidewalk of a well known street.