context: Chances are about even that Sandra left the milk. It is likely that John put down the apple. It is improbable that Lily is a swan. It is probably the case that if either John put down the apple, or Lily is a swan, then Daniel got the milk. Chances are about even that if either Lily is a swan, or John put down the apple, then Mary moved to the office. It is probably the case that if either Lily is a swan, or Sandra left the milk, then Julius is white.
hypothesis: Chances are about even that either Julius is white, or Lily is a swan.
valid_hypothesis: Chances are about even that either Julius is white, or Lily is a swan.
invalid_hypothesis: It is impossible that either Julius is white, or Lily is a swan.
hypothesis_assertion: Either Julius is white, or Lily is a swan.