context: It is highly likely that Winona is a mouse. It is probably the case that Brian is green. It is highly likely that Mary went to the kitchen. It is highly unlikely that if Winona is a mouse, or Mary went to the kitchen, then Sandra took the milk. It is certain that if either Mary went to the kitchen, or Winona is a mouse, then Lily is gray. We doubt that if Winona is a mouse, and Brian is green, then Julius is a frog.
hypothesis: It is probable that sandra took the milk, or Brian is green.
valid_hypothesis: It is probable that sandra took the milk, or Brian is green.
invalid_hypothesis: It is unlikely that sandra took the milk, or Brian is green.
hypothesis_assertion: Sandra took the milk, or Brian is green.