context: There is almost no chance that Lily is gray. It is probably not the case that Sandra left the apple. We doubt that John discarded the milk. It is unlikely that if either John discarded the milk, or Sandra left the apple, then Jessica is a mouse. There is little chance that if Lily is gray, or John discarded the milk, then Brian is white. It is almost certain that if either Lily is gray, or John discarded the milk, then Mary went to the park.
hypothesis: It is probable that either Jessica is a mouse, or John discarded the milk.
valid_hypothesis: We doubt that either Jessica is a mouse, or John discarded the milk.
invalid_hypothesis: It is probable that either Jessica is a mouse, or John discarded the milk.
hypothesis_assertion: Either Jessica is a mouse, or John discarded the milk.