context: It is improbable that John went to the hallway. We believe that Greg is white. It is probably not the case that Julius is a rhino. It is improbable that if Julius is a rhino, or John went to the hallway, then Daniel dropped the apple. It is improbable that if Julius is a rhino, or John went to the hallway, then Fred left the milk. Chances are slight that if either Greg is white, or John went to the hallway, then Mary moved to the garden.
hypothesis: We doubt that daniel dropped the apple, or Greg is white.
valid_hypothesis: We believe that daniel dropped the apple, or Greg is white.
invalid_hypothesis: We doubt that daniel dropped the apple, or Greg is white.
hypothesis_assertion: Daniel dropped the apple, or Greg is white.