context: A biker wearing a white t-shirt is jumping over dirt hills.
hypothesis: It is certain that a biker jumps over dirt hills in a white shirt.
valid_hypothesis: It is certain that a biker jumps over dirt hills in a white shirt.
invalid_hypothesis: It is improbable that a biker jumps over dirt hills in a white shirt.
hypothesis_assertion: A biker jumps over dirt hills in a white shirt.