context: There is little chance that Sandra left the football. It is unlikely that Mary put down the apple. Chances are slight that John picked up the milk. It is highly likely that if Mary put down the apple, and Sandra left the football, then Antoine is thirsty. There is little chance that if either Mary put down the apple, or Sandra left the football, then Julius is green. There is little chance that if either John picked up the milk, or Sandra left the football, then Bernhard is a frog.
hypothesis: Chances are about even that bernhard is a frog, and John picked up the milk.
valid_hypothesis: It is impossible that bernhard is a frog, and John picked up the milk.
invalid_hypothesis: Chances are about even that bernhard is a frog, and John picked up the milk.
hypothesis_assertion: Bernhard is a frog, and John picked up the milk.