context: There is a very good chance that Julius is a frog. Chances are slight that Mary moved to the office. There is little chance that John got the apple. It is probably the case that if either Julius is a frog, or Mary moved to the office, then Lily is a lion. It is probably the case that if Julius is a frog, or Mary moved to the office, then Sandra grabbed the milk. It is almost certain that if either John got the apple, or Julius is a frog, then Greg is a swan.
hypothesis: There is a better than even chance that greg is a swan, and Mary moved to the office.
valid_hypothesis: It is highly unlikely that greg is a swan, and Mary moved to the office.
invalid_hypothesis: There is a better than even chance that greg is a swan, and Mary moved to the office.
hypothesis_assertion: Greg is a swan, and Mary moved to the office.