context: It is almost certain that Greg is gray. There is almost no chance that John went to the garden. Chances are about even that Sandra got the apple. We doubt that if either Sandra got the apple, or Greg is gray, then Mary put down the milk. There is little chance that if John went to the garden, or Sandra got the apple, then Lily is a lion. It is improbable that if Sandra got the apple, and Greg is gray, then Bernhard is yellow.
hypothesis: It is almost certain that mary put down the milk, or Greg is gray.
valid_hypothesis: It is almost certain that mary put down the milk, or Greg is gray.
invalid_hypothesis: It is highly unlikely that mary put down the milk, or Greg is gray.
hypothesis_assertion: Mary put down the milk, or Greg is gray.