context: It is certain that John took the milk. It is improbable that Greg is green. It is highly likely that Mary is in the park.
hypothesis: Chances are slight that either Mary is in the park, or Greg is green.
valid_hypothesis: There is a very good chance that either Mary is in the park, or Greg is green.
invalid_hypothesis: Chances are slight that either Mary is in the park, or Greg is green.
hypothesis_assertion: Either Mary is in the park, or Greg is green.