context: It is certain that John left the football. It is impossible that Bernhard is gray. It is unlikely that Gertrude is a mouse. It is highly likely that if either Gertrude is a mouse, or John left the football, then Greg is a lion. It is improbable that if Gertrude is a mouse, or Bernhard is gray, then Lily is white. There is little chance that if either Gertrude is a mouse, or John left the football, then Julius is a rhino.
hypothesis: It is impossible that bernhard is gray, and John left the football.
valid_hypothesis: It is impossible that bernhard is gray, and John left the football.
invalid_hypothesis: There is a better than even chance that bernhard is gray, and John left the football.
hypothesis_assertion: Bernhard is gray, and John left the football.