context: It is highly unlikely that Lily is white. It is improbable that Mary went to the kitchen. It is probable that Gertrude is a mouse. It is likely that if Mary went to the kitchen, and Lily is white, then John discarded the milk. There is a better than even chance that if Gertrude is a mouse, and Mary went to the kitchen, then Greg is a swan. Chances are about even that if Mary went to the kitchen, and Lily is white, then Bernhard is yellow.
hypothesis: There is little chance that mary went to the kitchen, or Gertrude is a mouse.
valid_hypothesis: We believe that mary went to the kitchen, or Gertrude is a mouse.
invalid_hypothesis: There is little chance that mary went to the kitchen, or Gertrude is a mouse.
hypothesis_assertion: Mary went to the kitchen, or Gertrude is a mouse.