context: It is probably the case that Mary moved to the garden. It is probably the case that Brian is a rhino. It is improbable that Julius is a frog. There is little chance that if either Julius is a frog, or Mary moved to the garden, then Winona is a mouse. It is almost certain that if either Brian is a rhino, or Julius is a frog, then John went to the garden. It is almost certain that if Brian is a rhino, and Mary moved to the garden, then Bernhard is a swan.
hypothesis: Chances are about even that brian is a rhino, and Winona is a mouse.
valid_hypothesis: It is highly unlikely that brian is a rhino, and Winona is a mouse.
invalid_hypothesis: Chances are about even that brian is a rhino, and Winona is a mouse.
hypothesis_assertion: Brian is a rhino, and Winona is a mouse.