context: Chances are slight that Lily is green. Chances are slight that Daniel dropped the milk. It is probably the case that Bill went to the kitchen. We doubt that if Lily is green, or Bill went to the kitchen, then Jessica is a mouse. We doubt that if Daniel dropped the milk, and Lily is green, then Julius is gray. There is a very good chance that if Bill went to the kitchen, or Daniel dropped the milk, then Greg is yellow.
hypothesis: It is improbable that julius is gray, or Greg is yellow.
valid_hypothesis: There is a better than even chance that julius is gray, or Greg is yellow.
invalid_hypothesis: It is improbable that julius is gray, or Greg is yellow.
hypothesis_assertion: Julius is gray, or Greg is yellow.