context: It is highly unlikely that Lily is a lion. It is probably the case that Brian is green. It is highly unlikely that Sandra got the football. It is probable that if Brian is green, or Lily is a lion, then Julius is a rhino. There is little chance that if Sandra got the football, or Lily is a lion, then Mary picked up the apple. It is likely that if Sandra got the football, or Lily is a lion, then John went to the kitchen.
hypothesis: It is certain that either Sandra got the football, or Mary picked up the apple.
valid_hypothesis: It is highly unlikely that either Sandra got the football, or Mary picked up the apple.
invalid_hypothesis: It is certain that either Sandra got the football, or Mary picked up the apple.
hypothesis_assertion: Either Sandra got the football, or Mary picked up the apple.