context: It is almost certain that Lily is a frog. Chances are about even that Greg is white. There is a better than even chance that Bernhard is a lion. Chances are slight that if Lily is a frog, and Greg is white, then Mary is in the cinema. Chances are slight that if either Greg is white, or Lily is a frog, then Sandra left the apple. It is probably the case that if Greg is white, or Lily is a frog, then Brian is green.
hypothesis: We doubt that greg is white, or Lily is a frog.
valid_hypothesis: It is almost certain that greg is white, or Lily is a frog.
invalid_hypothesis: We doubt that greg is white, or Lily is a frog.
hypothesis_assertion: Greg is white, or Lily is a frog.