All people who catch on are people who study. Some lizards are not salamanders. All lizards are reptiles. Some members of the suborder Ophidia are not snakes. No burrowing snakes are poisonous snakes.
All frogs are amphibians.
All places where there are snakes are places where there are frogs. All times the frog population decreases are times that the snake population decreases. All people who arrived are cheerleaders. All people who got seats are people who arrived early. Some home movies are things that are boring as dirt.