context: It is impossible that John got the milk. It is highly unlikely that Mary went to the office. Chances are about even that Daniel left the milk. It is probable that if either Daniel left the milk, or Mary went to the office, then Bernhard is a frog. It is probably not the case that if Daniel left the milk, or Mary went to the office, then Greg is a rhino. It is probably the case that if Mary went to the office, and Daniel left the milk, then Brian is gray.
hypothesis: Chances are slight that daniel left the milk, and Greg is a rhino.
valid_hypothesis: Chances are slight that daniel left the milk, and Greg is a rhino.
invalid_hypothesis: It is highly likely that daniel left the milk, and Greg is a rhino.
hypothesis_assertion: Daniel left the milk, and Greg is a rhino.