context: It is likely that Mary went to the garden. It is certain that Bernhard is a swan. It is probably not the case that Brian is a frog.
hypothesis: It is certain that brian is a frog, or Bernhard is a swan.
valid_hypothesis: It is certain that brian is a frog, or Bernhard is a swan.
invalid_hypothesis: It is improbable that brian is a frog, or Bernhard is a swan.
hypothesis_assertion: Brian is a frog, or Bernhard is a swan.