context: Chances are about even that Bernhard is a lion. There is a better than even chance that Gertrude is a mouse. It is highly unlikely that Bill is in the kitchen. It is probably the case that if Bill is in the kitchen, and Gertrude is a mouse, then Brian is white. There is little chance that if either Bill is in the kitchen, or Gertrude is a mouse, then Mary dropped the milk. It is probable that if either Gertrude is a mouse, or Bill is in the kitchen, then Lily is yellow.
hypothesis: It is improbable that either Gertrude is a mouse, or Brian is white.
valid_hypothesis: There is a better than even chance that either Gertrude is a mouse, or Brian is white.
invalid_hypothesis: It is improbable that either Gertrude is a mouse, or Brian is white.
hypothesis_assertion: Either Gertrude is a mouse, or Brian is white.