context: Chances are slight that Brian is green. There is little chance that Greg is a lion. It is probably the case that Mary went to the school.
hypothesis: Chances are slight that either Mary went to the school, or Greg is a lion.
valid_hypothesis: It is probable that either Mary went to the school, or Greg is a lion.
invalid_hypothesis: Chances are slight that either Mary went to the school, or Greg is a lion.
hypothesis_assertion: Either Mary went to the school, or Greg is a lion.