context: It is likely that Greg is gray. It is probably not the case that Mary went to the kitchen. We doubt that Brian is gray. We believe that if Mary went to the kitchen, or Brian is gray, then Julius is a frog. We believe that if either Mary went to the kitchen, or Brian is gray, then Lily is yellow. It is probably the case that if either Greg is gray, or Mary went to the kitchen, then Gertrude is a wolf.
hypothesis: There is little chance that brian is gray, and Julius is a frog.
valid_hypothesis: There is little chance that brian is gray, and Julius is a frog.
invalid_hypothesis: It is certain that brian is gray, and Julius is a frog.
hypothesis_assertion: Brian is gray, and Julius is a frog.