context: It is probably the case that Mary moved to the office. It is probably not the case that Greg is a lion. It is improbable that John went to the garden. We believe that if Greg is a lion, and Mary moved to the office, then Bernhard is a lion. We doubt that if either Greg is a lion, or John went to the garden, then Brian is green. There is little chance that if Greg is a lion, and John went to the garden, then Sandra left the apple.
hypothesis: It is almost certain that either Bernhard is a lion, or Greg is a lion.
valid_hypothesis: There is little chance that either Bernhard is a lion, or Greg is a lion.
invalid_hypothesis: It is almost certain that either Bernhard is a lion, or Greg is a lion.
hypothesis_assertion: Either Bernhard is a lion, or Greg is a lion.