context: It is probably not the case that Daniel left the milk. It is highly unlikely that Bernhard is a rhino. Chances are about even that Greg is yellow. It is probable that if Bernhard is a rhino, and Greg is yellow, then Julius is green. We believe that if Bernhard is a rhino, and Daniel left the milk, then Mary moved to the office. It is probably not the case that if Greg is yellow, and Daniel left the milk, then John went to the kitchen.
hypothesis: It is likely that julius is green, and Bernhard is a rhino.
valid_hypothesis: There is almost no chance that julius is green, and Bernhard is a rhino.
invalid_hypothesis: It is likely that julius is green, and Bernhard is a rhino.
hypothesis_assertion: Julius is green, and Bernhard is a rhino.