context: It is highly unlikely that John picked up the apple. It is highly unlikely that Bernhard is a frog. It is probably the case that Lily is yellow. It is highly likely that if either John picked up the apple, or Lily is yellow, then Julius is a lion. It is certain that if Lily is yellow, and Bernhard is a frog, then Sandra left the football. Chances are about even that if either John picked up the apple, or Lily is yellow, then Mary moved to the office.
hypothesis: There is a better than even chance that either Sandra left the football, or Julius is a lion.
valid_hypothesis: There is a better than even chance that either Sandra left the football, or Julius is a lion.
invalid_hypothesis: There is almost no chance that either Sandra left the football, or Julius is a lion.
hypothesis_assertion: Either Sandra left the football, or Julius is a lion.