context: It is unlikely that Mary went to the hallway. It is improbable that Sandra left the apple. It is impossible that Greg is a frog. It is probably the case that if Greg is a frog, and Sandra left the apple, then Yann is thirsty. There is little chance that if either Mary went to the hallway, or Greg is a frog, then Julius is white. It is probably not the case that if Greg is a frog, or Sandra left the apple, then John got the apple.
hypothesis: It is impossible that mary went to the hallway, and John got the apple.
valid_hypothesis: It is impossible that mary went to the hallway, and John got the apple.
invalid_hypothesis: It is highly likely that mary went to the hallway, and John got the apple.
hypothesis_assertion: Mary went to the hallway, and John got the apple.