context: It is probably the case that Emily is a mouse. It is impossible that Lily is a lion. It is probably the case that Daniel grabbed the milk. It is impossible that if Emily is a mouse, and Daniel grabbed the milk, then Mary moved to the office. Chances are slight that if either Emily is a mouse, or Daniel grabbed the milk, then Brian is a rhino. It is improbable that if either Lily is a lion, or Daniel grabbed the milk, then Greg is a swan.
hypothesis: It is highly unlikely that either Greg is a swan, or Lily is a lion.
valid_hypothesis: It is highly unlikely that either Greg is a swan, or Lily is a lion.
invalid_hypothesis: It is probable that either Greg is a swan, or Lily is a lion.
hypothesis_assertion: Either Greg is a swan, or Lily is a lion.