context: It is highly likely that John took the milk. It is almost certain that Lily is gray. It is impossible that Greg is a frog.
hypothesis: It is probably the case that greg is a frog, and John took the milk.
valid_hypothesis: It is impossible that greg is a frog, and John took the milk.
invalid_hypothesis: It is probably the case that greg is a frog, and John took the milk.
hypothesis_assertion: Greg is a frog, and John took the milk.