context: A skier is heading into a grove of trees.
hypothesis: We doubt that the man, an amateur skier, has tried a ski run that is too hard and is careening out of control down the hill.
valid_hypothesis: We doubt that the man, an amateur skier, has tried a ski run that is too hard and is careening out of control down the hill.
invalid_hypothesis: There is a very good chance that the man, an amateur skier, has tried a ski run that is too hard and is careening out of control down the hill.
hypothesis_assertion: The man, an amateur skier, has tried a ski run that is too hard and is careening out of control down the hill.