context: It is unlikely that Greg is green. There is a very good chance that Daniel left the milk. It is highly unlikely that Sumit is bored. It is certain that if Daniel left the milk, and Sumit is bored, then John took the apple. It is improbable that if Greg is green, or Daniel left the milk, then Fred is in the school. There is a very good chance that if Sumit is bored, and Greg is green, then Brian is gray.
hypothesis: It is likely that either Brian is gray, or John took the apple.
valid_hypothesis: It is highly unlikely that either Brian is gray, or John took the apple.
invalid_hypothesis: It is likely that either Brian is gray, or John took the apple.
hypothesis_assertion: Either Brian is gray, or John took the apple.