context: There is a better than even chance that Winona is a mouse. It is probably the case that Lily is a lion. It is likely that Greg is yellow. It is highly unlikely that if Greg is yellow, and Lily is a lion, then John went to the office. It is highly unlikely that if Greg is yellow, or Winona is a mouse, then Daniel left the football. It is highly likely that if Greg is yellow, or Winona is a mouse, then Brian is a frog.
hypothesis: There is almost no chance that greg is yellow, and Lily is a lion.
valid_hypothesis: Chances are about even that greg is yellow, and Lily is a lion.
invalid_hypothesis: There is almost no chance that greg is yellow, and Lily is a lion.
hypothesis_assertion: Greg is yellow, and Lily is a lion.