context: It is likely that Lily is a swan. We doubt that Jeff went to the garden. Chances are about even that Brian is gray.
hypothesis: It is probably not the case that jeff went to the garden, or Lily is a swan.
valid_hypothesis: We believe that jeff went to the garden, or Lily is a swan.
invalid_hypothesis: It is probably not the case that jeff went to the garden, or Lily is a swan.
hypothesis_assertion: Jeff went to the garden, or Lily is a swan.