context: Chances are slight that Jeff went to the kitchen. It is probable that Greg is green. There is a very good chance that Jessica is a cat. It is unlikely that if either Jeff went to the kitchen, or Greg is green, then John dropped the apple. There is almost no chance that if Greg is green, or Jeff went to the kitchen, then Julius is gray. We believe that if Jessica is a cat, and Greg is green, then Lily is a frog.
hypothesis: It is probably the case that either Lily is a frog, or Greg is green.
valid_hypothesis: It is probably not the case that either Lily is a frog, or Greg is green.
invalid_hypothesis: It is probably the case that either Lily is a frog, or Greg is green.
hypothesis_assertion: Either Lily is a frog, or Greg is green.