context: It is improbable that Greg is white. There is almost no chance that Mary put down the milk. Chances are slight that Bill went to the garden. It is probable that if Greg is white, and Mary put down the milk, then Jessica is a mouse. It is probably the case that if Greg is white, or Bill went to the garden, then Lily is a swan. It is highly unlikely that if either Bill went to the garden, or Greg is white, then John left the football.
hypothesis: It is almost certain that either John left the football, or Bill went to the garden.
valid_hypothesis: There is little chance that either John left the football, or Bill went to the garden.
invalid_hypothesis: It is almost certain that either John left the football, or Bill went to the garden.
hypothesis_assertion: Either John left the football, or Bill went to the garden.