context: There is a very good chance that Greg is green. There is a better than even chance that Mary picked up the apple. There is little chance that Bernhard is a frog. It is improbable that if Greg is green, or Bernhard is a frog, then Sandra put down the milk. It is certain that if Mary picked up the apple, and Greg is green, then John took the football. It is almost certain that if Bernhard is a frog, and Greg is green, then Gertrude is a wolf.
hypothesis: Chances are about even that bernhard is a frog, or John took the football.
valid_hypothesis: Chances are about even that bernhard is a frog, or John took the football.
invalid_hypothesis: It is impossible that bernhard is a frog, or John took the football.
hypothesis_assertion: Bernhard is a frog, or John took the football.