context: It is probable that Mary left the milk. Chances are slight that Lily is gray. There is a better than even chance that Julius is white. It is probable that if Mary left the milk, or Julius is white, then Brian is a lion. There is little chance that if Lily is gray, and Mary left the milk, then Greg is a swan. It is highly unlikely that if Mary left the milk, or Lily is gray, then Gertrude is a mouse.
hypothesis: It is improbable that either Lily is gray, or Mary left the milk.
valid_hypothesis: It is probably the case that either Lily is gray, or Mary left the milk.
invalid_hypothesis: It is improbable that either Lily is gray, or Mary left the milk.
hypothesis_assertion: Either Lily is gray, or Mary left the milk.