context: It is probably the case that Mary went to the kitchen. It is unlikely that John got the apple. It is probably the case that Greg is gray.
hypothesis: There is a better than even chance that either John got the apple, or Greg is gray.
valid_hypothesis: There is a better than even chance that either John got the apple, or Greg is gray.
invalid_hypothesis: It is improbable that either John got the apple, or Greg is gray.
hypothesis_assertion: Either John got the apple, or Greg is gray.