context: It is highly unlikely that Lily is yellow. There is little chance that Greg is gray. Chances are about even that John went to the kitchen. It is probably not the case that if Lily is yellow, and Greg is gray, then Julius is a rhino. There is a very good chance that if Greg is gray, or Lily is yellow, then Mary got the milk. We believe that if Lily is yellow, or John went to the kitchen, then Brian is a frog.
hypothesis: It is improbable that greg is gray, or Lily is yellow.
valid_hypothesis: It is improbable that greg is gray, or Lily is yellow.
invalid_hypothesis: It is highly likely that greg is gray, or Lily is yellow.
hypothesis_assertion: Greg is gray, or Lily is yellow.