context: It is improbable that John moved to the office. It is probably not the case that Sandra left the apple. It is probably the case that Bernhard is a lion. Chances are about even that if either John moved to the office, or Bernhard is a lion, then Greg is green. There is little chance that if Sandra left the apple, and John moved to the office, then Mary went to the garden. It is probable that if Bernhard is a lion, and John moved to the office, then Julius is a lion.
hypothesis: Chances are about even that either Julius is a lion, or Greg is green.
valid_hypothesis: Chances are about even that either Julius is a lion, or Greg is green.
invalid_hypothesis: It is highly unlikely that either Julius is a lion, or Greg is green.
hypothesis_assertion: Either Julius is a lion, or Greg is green.