context: It is almost certain that Mary put down the apple. Chances are about even that Daniel left the milk. It is probably not the case that Greg is a frog.
hypothesis: We believe that either Mary put down the apple, or Greg is a frog.
valid_hypothesis: We believe that either Mary put down the apple, or Greg is a frog.
invalid_hypothesis: It is unlikely that either Mary put down the apple, or Greg is a frog.
hypothesis_assertion: Either Mary put down the apple, or Greg is a frog.