context: Chances are slight that John went to the garden. It is almost certain that Mary left the apple. There is a very good chance that Bill dropped the milk. It is improbable that if John went to the garden, or Bill dropped the milk, then Greg is green. There is a very good chance that if Bill dropped the milk, and John went to the garden, then Julius is a frog. There is a better than even chance that if Bill dropped the milk, and John went to the garden, then Brian is a lion.
hypothesis: There is little chance that either Greg is green, or Brian is a lion.
valid_hypothesis: There is little chance that either Greg is green, or Brian is a lion.
invalid_hypothesis: It is probable that either Greg is green, or Brian is a lion.
hypothesis_assertion: Either Greg is green, or Brian is a lion.