context: We believe that Winona is a mouse. There is a very good chance that Mary went to the office. It is almost certain that Fred discarded the milk. It is highly likely that if either Fred discarded the milk, or Winona is a mouse, then Bernhard is gray. It is unlikely that if Mary went to the office, and Fred discarded the milk, then Julius is a rhino. It is probably not the case that if Mary went to the office, or Fred discarded the milk, then Brian is a swan.
hypothesis: Chances are slight that winona is a mouse, and Julius is a rhino.
valid_hypothesis: Chances are slight that winona is a mouse, and Julius is a rhino.
invalid_hypothesis: It is likely that winona is a mouse, and Julius is a rhino.
hypothesis_assertion: Winona is a mouse, and Julius is a rhino.