context: It is likely that John went to the kitchen. It is probable that Bernhard is gray. We believe that Gertrude is a mouse. We believe that if John went to the kitchen, and Gertrude is a mouse, then Brian is a frog. It is probable that if John went to the kitchen, or Bernhard is gray, then Lily is yellow. We doubt that if either Gertrude is a mouse, or John went to the kitchen, then Greg is a swan.
hypothesis: It is highly likely that brian is a frog, and Greg is a swan.
valid_hypothesis: It is impossible that brian is a frog, and Greg is a swan.
invalid_hypothesis: It is highly likely that brian is a frog, and Greg is a swan.
hypothesis_assertion: Brian is a frog, and Greg is a swan.