context: There is a better than even chance that Julius is a rhino. It is certain that Greg is a frog. Chances are slight that Mary moved to the office. There is a very good chance that if Greg is a frog, and Mary moved to the office, then Bernhard is a swan. It is probably not the case that if Mary moved to the office, and Greg is a frog, then John picked up the apple. There is a better than even chance that if Greg is a frog, or Julius is a rhino, then Lily is a frog.
hypothesis: There is little chance that greg is a frog, and Lily is a frog.
valid_hypothesis: There is a better than even chance that greg is a frog, and Lily is a frog.
invalid_hypothesis: There is little chance that greg is a frog, and Lily is a frog.
hypothesis_assertion: Greg is a frog, and Lily is a frog.