context: It is likely that Greg is a frog. It is highly likely that Julius is a swan. It is certain that John grabbed the milk.
hypothesis: There is a better than even chance that greg is a frog, and Julius is a swan.
valid_hypothesis: There is a better than even chance that greg is a frog, and Julius is a swan.
invalid_hypothesis: There is little chance that greg is a frog, and Julius is a swan.
hypothesis_assertion: Greg is a frog, and Julius is a swan.