context: It is almost certain that Greg is white. It is almost certain that Mary went to the garden. It is probable that Fred discarded the milk. It is probably not the case that if either Fred discarded the milk, or Mary went to the garden, then Jessica is a wolf. It is probable that if Fred discarded the milk, or Greg is white, then Sandra got the apple. Chances are about even that if either Fred discarded the milk, or Mary went to the garden, then Julius is a swan.
hypothesis: It is almost certain that julius is a swan, and Jessica is a wolf.
valid_hypothesis: It is highly unlikely that julius is a swan, and Jessica is a wolf.
invalid_hypothesis: It is almost certain that julius is a swan, and Jessica is a wolf.
hypothesis_assertion: Julius is a swan, and Jessica is a wolf.