context: It is highly unlikely that Greg is gray. Chances are slight that Emily is a mouse. It is almost certain that Mary got the football. There is little chance that if either Emily is a mouse, or Mary got the football, then Lily is white. It is impossible that if either Greg is gray, or Emily is a mouse, then Bill put down the milk. It is improbable that if either Greg is gray, or Mary got the football, then John left the apple.
hypothesis: It is highly unlikely that either Greg is gray, or Bill put down the milk.
valid_hypothesis: It is highly unlikely that either Greg is gray, or Bill put down the milk.
invalid_hypothesis: It is certain that either Greg is gray, or Bill put down the milk.
hypothesis_assertion: Either Greg is gray, or Bill put down the milk.