context: Chances are slight that Jason is hungry. We believe that Mary picked up the apple. It is improbable that Julie is in the bedroom. It is certain that if Mary picked up the apple, and Jason is hungry, then Daniel left the football. It is probably the case that if Julie is in the bedroom, or Mary picked up the apple, then John went to the office. It is probably not the case that if Mary picked up the apple, and Jason is hungry, then Greg is a rhino.
hypothesis: It is likely that mary picked up the apple, and Jason is hungry.
valid_hypothesis: It is improbable that mary picked up the apple, and Jason is hungry.
invalid_hypothesis: It is likely that mary picked up the apple, and Jason is hungry.
hypothesis_assertion: Mary picked up the apple, and Jason is hungry.