context: It is probable that Sandra got the football. There is almost no chance that Lily is a frog. There is little chance that Greg is a rhino.
hypothesis: It is impossible that greg is a rhino, and Lily is a frog.
valid_hypothesis: It is impossible that greg is a rhino, and Lily is a frog.
invalid_hypothesis: It is almost certain that greg is a rhino, and Lily is a frog.
hypothesis_assertion: Greg is a rhino, and Lily is a frog.