context: There is a very good chance that Bernhard is a swan. It is probable that Fred left the football. It is probable that Mary went to the hallway. It is certain that if Bernhard is a swan, and Mary went to the hallway, then Brian is gray. It is improbable that if Mary went to the hallway, and Bernhard is a swan, then Sandra took the apple. It is almost certain that if Fred left the football, or Mary went to the hallway, then Julius is a frog.
hypothesis: It is highly likely that sandra took the apple, or Julius is a frog.
valid_hypothesis: It is highly likely that sandra took the apple, or Julius is a frog.
invalid_hypothesis: It is impossible that sandra took the apple, or Julius is a frog.
hypothesis_assertion: Sandra took the apple, or Julius is a frog.