context: There is little chance that Greg is a rhino. It is impossible that Mary went to the hallway. Chances are slight that Fred is in the kitchen. It is highly unlikely that if Mary went to the hallway, or Greg is a rhino, then Bernhard is a lion. It is highly likely that if Fred is in the kitchen, or Greg is a rhino, then Sandra took the milk. It is improbable that if Greg is a rhino, and Mary went to the hallway, then John moved to the garden.
hypothesis: It is highly likely that sandra took the milk, or Greg is a rhino.
valid_hypothesis: We doubt that sandra took the milk, or Greg is a rhino.
invalid_hypothesis: It is highly likely that sandra took the milk, or Greg is a rhino.
hypothesis_assertion: Sandra took the milk, or Greg is a rhino.