context: It is unlikely that Lily is a frog. There is a very good chance that Brian is gray. It is impossible that Greg is a rhino. It is unlikely that if Lily is a frog, or Greg is a rhino, then Julius is white. It is impossible that if either Lily is a frog, or Brian is gray, then John went to the garden. There is a better than even chance that if either Brian is gray, or Greg is a rhino, then Daniel left the milk.
hypothesis: Chances are slight that brian is gray, or Greg is a rhino.
valid_hypothesis: There is a very good chance that brian is gray, or Greg is a rhino.
invalid_hypothesis: Chances are slight that brian is gray, or Greg is a rhino.
hypothesis_assertion: Brian is gray, or Greg is a rhino.