context: There is a better than even chance that Bill went to the kitchen. There is little chance that John put down the milk. It is unlikely that Bernhard is a frog. It is impossible that if John put down the milk, or Bernhard is a frog, then Mary moved to the office. It is probable that if John put down the milk, and Bernhard is a frog, then Julius is a swan. It is unlikely that if either Bernhard is a frog, or John put down the milk, then Lily is white.
hypothesis: There is a better than even chance that either Bill went to the kitchen, or Lily is white.
valid_hypothesis: There is a better than even chance that either Bill went to the kitchen, or Lily is white.
invalid_hypothesis: There is almost no chance that either Bill went to the kitchen, or Lily is white.
hypothesis_assertion: Either Bill went to the kitchen, or Lily is white.