context: There is a very good chance that Mary picked up the milk. It is highly unlikely that Lily is a frog. It is probable that Bernhard is a rhino. It is certain that if either Mary picked up the milk, or Lily is a frog, then Daniel took the football. It is impossible that if either Mary picked up the milk, or Lily is a frog, then Brian is green. There is a better than even chance that if Mary picked up the milk, or Bernhard is a rhino, then Greg is a swan.
hypothesis: It is impossible that either Mary picked up the milk, or Lily is a frog.
valid_hypothesis: We believe that either Mary picked up the milk, or Lily is a frog.
invalid_hypothesis: It is impossible that either Mary picked up the milk, or Lily is a frog.
hypothesis_assertion: Either Mary picked up the milk, or Lily is a frog.