context: It is improbable that John dropped the apple. Chances are slight that Greg is yellow. There is a very good chance that Mary went to the office.
hypothesis: It is probable that greg is yellow, and John dropped the apple.
valid_hypothesis: There is almost no chance that greg is yellow, and John dropped the apple.
invalid_hypothesis: It is probable that greg is yellow, and John dropped the apple.
hypothesis_assertion: Greg is yellow, and John dropped the apple.