context: Chances are slight that Sandra took the football. It is probable that Brian is a frog. It is almost certain that Julius is a swan.
hypothesis: It is improbable that brian is a frog, and Julius is a swan.
valid_hypothesis: It is likely that brian is a frog, and Julius is a swan.
invalid_hypothesis: It is improbable that brian is a frog, and Julius is a swan.
hypothesis_assertion: Brian is a frog, and Julius is a swan.