context: It is improbable that Bernhard is yellow. There is little chance that Sandra grabbed the milk. We doubt that Greg is yellow. There is a very good chance that if either Sandra grabbed the milk, or Greg is yellow, then John took the apple. It is almost certain that if Greg is yellow, and Bernhard is yellow, then Brian is gray. It is improbable that if Greg is yellow, or Bernhard is yellow, then Winona is a cat.
hypothesis: It is probable that greg is yellow, or John took the apple.
valid_hypothesis: It is probably not the case that greg is yellow, or John took the apple.
invalid_hypothesis: It is probable that greg is yellow, or John took the apple.
hypothesis_assertion: Greg is yellow, or John took the apple.