context: There is almost no chance that Mary put down the milk. Chances are slight that Lily is a rhino. It is impossible that Greg is a lion. It is highly unlikely that if Mary put down the milk, or Lily is a rhino, then Gertrude is a mouse. It is probably not the case that if Mary put down the milk, and Greg is a lion, then Julius is gray. It is probably not the case that if either Greg is a lion, or Mary put down the milk, then Bernhard is yellow.
hypothesis: Chances are about even that gertrude is a mouse, and Lily is a rhino.
valid_hypothesis: It is impossible that gertrude is a mouse, and Lily is a rhino.
invalid_hypothesis: Chances are about even that gertrude is a mouse, and Lily is a rhino.
hypothesis_assertion: Gertrude is a mouse, and Lily is a rhino.