context: There is almost no chance that Lily is a rhino. It is highly likely that Jeff went to the kitchen. It is highly unlikely that Julius is a frog. It is highly likely that if Jeff went to the kitchen, or Lily is a rhino, then Gertrude is a cat. Chances are about even that if Jeff went to the kitchen, and Lily is a rhino, then Brian is yellow. It is probably the case that if Jeff went to the kitchen, or Julius is a frog, then Bernhard is gray.
hypothesis: It is probably not the case that either Jeff went to the kitchen, or Brian is yellow.
valid_hypothesis: It is highly likely that either Jeff went to the kitchen, or Brian is yellow.
invalid_hypothesis: It is probably not the case that either Jeff went to the kitchen, or Brian is yellow.
hypothesis_assertion: Either Jeff went to the kitchen, or Brian is yellow.