context: It is improbable that Jessica is a sheep. We doubt that Mary grabbed the milk. There is little chance that Greg is yellow.
hypothesis: It is certain that either Jessica is a sheep, or Greg is yellow.
valid_hypothesis: We doubt that either Jessica is a sheep, or Greg is yellow.
invalid_hypothesis: It is certain that either Jessica is a sheep, or Greg is yellow.
hypothesis_assertion: Either Jessica is a sheep, or Greg is yellow.