context: It is almost certain that Lily is a rhino. It is highly unlikely that Fred went to the office. It is unlikely that Greg is yellow.
hypothesis: It is highly likely that either Lily is a rhino, or Fred went to the office.
valid_hypothesis: It is highly likely that either Lily is a rhino, or Fred went to the office.
invalid_hypothesis: There is little chance that either Lily is a rhino, or Fred went to the office.
hypothesis_assertion: Either Lily is a rhino, or Fred went to the office.