context: It is likely that Lily is a frog. It is certain that Greg is white. It is likely that Sandra got the apple. Chances are slight that if Sandra got the apple, or Greg is white, then Emily is a wolf. It is impossible that if either Sandra got the apple, or Lily is a frog, then Julius is a lion. It is probable that if Greg is white, and Sandra got the apple, then Mary moved to the office.
hypothesis: There is almost no chance that mary moved to the office, and Sandra got the apple.
valid_hypothesis: Chances are about even that mary moved to the office, and Sandra got the apple.
invalid_hypothesis: There is almost no chance that mary moved to the office, and Sandra got the apple.
hypothesis_assertion: Mary moved to the office, and Sandra got the apple.