context: It is highly likely that John discarded the milk. It is probably not the case that Greg is a lion. There is almost no chance that Bernhard is a frog. There is almost no chance that if either John discarded the milk, or Greg is a lion, then Brian is green. It is improbable that if either Bernhard is a frog, or Greg is a lion, then Emily is a wolf. It is unlikely that if Greg is a lion, or John discarded the milk, then Mary went to the office.
hypothesis: There is little chance that either John discarded the milk, or Greg is a lion.
valid_hypothesis: It is probably the case that either John discarded the milk, or Greg is a lion.
invalid_hypothesis: There is little chance that either John discarded the milk, or Greg is a lion.
hypothesis_assertion: Either John discarded the milk, or Greg is a lion.