context: It is probably the case that Gertrude is a mouse. It is likely that Julius is yellow. It is improbable that Brian is green. Chances are slight that if Gertrude is a mouse, and Julius is yellow, then Lily is a frog. There is little chance that if Gertrude is a mouse, and Brian is green, then Sandra grabbed the milk. We believe that if Gertrude is a mouse, or Julius is yellow, then Emily is a sheep.
hypothesis: There is little chance that either Sandra grabbed the milk, or Brian is green.
valid_hypothesis: There is little chance that either Sandra grabbed the milk, or Brian is green.
invalid_hypothesis: It is almost certain that either Sandra grabbed the milk, or Brian is green.
hypothesis_assertion: Either Sandra grabbed the milk, or Brian is green.