context: It is certain that Julius is a rhino. There is little chance that Daniel left the milk. It is probable that Greg is yellow. There is a better than even chance that if Greg is yellow, or Daniel left the milk, then Winona is a wolf. We doubt that if Greg is yellow, or Daniel left the milk, then Gertrude is a mouse. Chances are about even that if Julius is a rhino, or Greg is yellow, then Bernhard is a swan.
hypothesis: There is little chance that greg is yellow, and Gertrude is a mouse.
valid_hypothesis: There is little chance that greg is yellow, and Gertrude is a mouse.
invalid_hypothesis: There is a very good chance that greg is yellow, and Gertrude is a mouse.
hypothesis_assertion: Greg is yellow, and Gertrude is a mouse.