context: The young man is trying to balance on the train tracks.
hypothesis: There is almost no chance that a young man is trying to balance on the train tracks while riding his bicycle.
valid_hypothesis: There is almost no chance that a young man is trying to balance on the train tracks while riding his bicycle.
invalid_hypothesis: It is likely that a young man is trying to balance on the train tracks while riding his bicycle.
hypothesis_assertion: A young man is trying to balance on the train tracks while riding his bicycle.