context: It is improbable that Lily is a frog. It is certain that Sandra got the apple. It is improbable that Brian is gray. There is a better than even chance that if either Brian is gray, or Lily is a frog, then Julius is green. It is highly unlikely that if Lily is a frog, and Sandra got the apple, then Mary went to the garden. It is highly likely that if either Lily is a frog, or Brian is gray, then Greg is a lion.
hypothesis: We doubt that greg is a lion, and Sandra got the apple.
valid_hypothesis: We doubt that greg is a lion, and Sandra got the apple.
invalid_hypothesis: It is likely that greg is a lion, and Sandra got the apple.
hypothesis_assertion: Greg is a lion, and Sandra got the apple.