context: It is certain that Bernhard is a swan. It is highly unlikely that Mary went to the school. It is probably the case that John dropped the milk.
hypothesis: It is highly unlikely that mary went to the school, and John dropped the milk.
valid_hypothesis: It is highly unlikely that mary went to the school, and John dropped the milk.
invalid_hypothesis: It is almost certain that mary went to the school, and John dropped the milk.
hypothesis_assertion: Mary went to the school, and John dropped the milk.