context: It is probable that Gertrude is a wolf. It is probably the case that Greg is a lion. We believe that Fred left the football. There is little chance that if Gertrude is a wolf, and Fred left the football, then John got the milk. It is likely that if Greg is a lion, or Fred left the football, then Mary moved to the office. It is almost certain that if Fred left the football, and Greg is a lion, then Julius is a swan.
hypothesis: It is improbable that fred left the football, or Mary moved to the office.
valid_hypothesis: It is highly likely that fred left the football, or Mary moved to the office.
invalid_hypothesis: It is improbable that fred left the football, or Mary moved to the office.
hypothesis_assertion: Fred left the football, or Mary moved to the office.