context: There is a better than even chance that Greg is yellow. Chances are about even that Julius is a swan. Chances are slight that Mary moved to the garden. It is certain that if Mary moved to the garden, or Greg is yellow, then Brian is white. There is little chance that if Mary moved to the garden, and Greg is yellow, then Emily is a sheep. We doubt that if Greg is yellow, and Mary moved to the garden, then John went to the office.
hypothesis: There is a better than even chance that either Greg is yellow, or John went to the office.
valid_hypothesis: There is a better than even chance that either Greg is yellow, or John went to the office.
invalid_hypothesis: There is little chance that either Greg is yellow, or John went to the office.
hypothesis_assertion: Either Greg is yellow, or John went to the office.