context: Several people are walking on a street and there is a large, blue crane towering and leaning against a building.
hypothesis: Chances are slight that they are walking rapidly away from a crane, which looks like it might tip over.
valid_hypothesis: Chances are slight that they are walking rapidly away from a crane, which looks like it might tip over.
invalid_hypothesis: We believe that they are walking rapidly away from a crane, which looks like it might tip over.
hypothesis_assertion: They are walking rapidly away from a crane, which looks like it might tip over.