context: It is probably the case that Winona is a mouse. It is impossible that Brian is white. It is likely that Greg is a rhino.
hypothesis: There is little chance that either Greg is a rhino, or Brian is white.
valid_hypothesis: It is probable that either Greg is a rhino, or Brian is white.
invalid_hypothesis: There is little chance that either Greg is a rhino, or Brian is white.
hypothesis_assertion: Either Greg is a rhino, or Brian is white.