context: A man sweeping in the street.
hypothesis: It is likely that a man is sweeping in the street to get ready for the parade.
valid_hypothesis: It is impossible that a man is sweeping in the street to get ready for the parade.
invalid_hypothesis: It is likely that a man is sweeping in the street to get ready for the parade.
hypothesis_assertion: A man is sweeping in the street to get ready for the parade.