context: It is probably the case that Mary moved to the garden. Chances are about even that Daniel is in the garden. It is impossible that John discarded the apple. Chances are about even that if Daniel is in the garden, or John discarded the apple, then Bernhard is a swan. We doubt that if either Daniel is in the garden, or Mary moved to the garden, then Julius is green. It is highly unlikely that if John discarded the apple, or Mary moved to the garden, then Greg is a rhino.
hypothesis: Chances are about even that either Mary moved to the garden, or Daniel is in the garden.
valid_hypothesis: Chances are about even that either Mary moved to the garden, or Daniel is in the garden.
invalid_hypothesis: It is almost certain that either Mary moved to the garden, or Daniel is in the garden.
hypothesis_assertion: Either Mary moved to the garden, or Daniel is in the garden.