context: It is almost certain that Mary went to the hallway. It is certain that Brian is a swan. It is likely that Jessica is a mouse. It is impossible that if Jessica is a mouse, or Brian is a swan, then Bill moved to the office. It is probably the case that if Mary went to the hallway, or Jessica is a mouse, then Greg is green. There is a very good chance that if Jessica is a mouse, or Brian is a swan, then Julius is a rhino.
hypothesis: It is probable that either Greg is green, or Bill moved to the office.
valid_hypothesis: It is probable that either Greg is green, or Bill moved to the office.
invalid_hypothesis: There is little chance that either Greg is green, or Bill moved to the office.
hypothesis_assertion: Either Greg is green, or Bill moved to the office.