context: It is impossible that Winona is a mouse. It is probably not the case that Bill went to the hallway. There is a very good chance that Bernhard is yellow. It is likely that if Bill went to the hallway, or Winona is a mouse, then Fred is in the school. We believe that if either Winona is a mouse, or Bill went to the hallway, then Brian is a frog. We believe that if Bernhard is yellow, and Bill went to the hallway, then John picked up the apple.
hypothesis: It is highly unlikely that either Brian is a frog, or Bernhard is yellow.
valid_hypothesis: It is probably the case that either Brian is a frog, or Bernhard is yellow.
invalid_hypothesis: It is highly unlikely that either Brian is a frog, or Bernhard is yellow.
hypothesis_assertion: Either Brian is a frog, or Bernhard is yellow.