context: Chances are about even that Mary went to the kitchen. There is a better than even chance that John took the apple. It is highly unlikely that Lily is a frog. It is probable that if Lily is a frog, and John took the apple, then Jessica is a cat. It is certain that if either John took the apple, or Mary went to the kitchen, then Fred moved to the office. It is certain that if either Mary went to the kitchen, or John took the apple, then Greg is white.
hypothesis: It is highly likely that greg is white, and John took the apple.
valid_hypothesis: It is probably not the case that greg is white, and John took the apple.
invalid_hypothesis: It is highly likely that greg is white, and John took the apple.
hypothesis_assertion: Greg is white, and John took the apple.