context: There is a very good chance that Julius is yellow. Chances are slight that Mary went to the hallway. It is highly unlikely that Sandra got the apple. It is likely that if Sandra got the apple, and Julius is yellow, then Gertrude is a cat. It is probably the case that if Mary went to the hallway, and Julius is yellow, then Lily is white. It is probably not the case that if either Mary went to the hallway, or Sandra got the apple, then Brian is white.
hypothesis: There is a very good chance that sandra got the apple, or Julius is yellow.
valid_hypothesis: There is a very good chance that sandra got the apple, or Julius is yellow.
invalid_hypothesis: It is improbable that sandra got the apple, or Julius is yellow.
hypothesis_assertion: Sandra got the apple, or Julius is yellow.