context: It is impossible that Sandra dropped the milk. It is highly likely that Winona is a mouse. It is probably the case that Mary left the football. It is highly unlikely that if Mary left the football, or Winona is a mouse, then Brian is a frog. There is almost no chance that if either Winona is a mouse, or Mary left the football, then Julius is a swan. There is little chance that if Sandra dropped the milk, and Winona is a mouse, then Lily is white.
hypothesis: It is highly likely that sandra dropped the milk, or Winona is a mouse.
valid_hypothesis: It is highly likely that sandra dropped the milk, or Winona is a mouse.
invalid_hypothesis: It is unlikely that sandra dropped the milk, or Winona is a mouse.
hypothesis_assertion: Sandra dropped the milk, or Winona is a mouse.