context: It is improbable that Brian is green. It is almost certain that Bernhard is white. Chances are about even that Daniel took the apple. It is unlikely that if either Bernhard is white, or Brian is green, then Bill is in the kitchen. It is improbable that if Bernhard is white, and Brian is green, then John went to the garden. It is probably the case that if Bernhard is white, and Brian is green, then Mary got the football.
hypothesis: It is impossible that bill is in the kitchen, and Mary got the football.
valid_hypothesis: It is impossible that bill is in the kitchen, and Mary got the football.
invalid_hypothesis: It is likely that bill is in the kitchen, and Mary got the football.
hypothesis_assertion: Bill is in the kitchen, and Mary got the football.