context: Moral system is used for organize thing. Lake is used for swim. Exercise is used for train. Swim is not used for differentiate pass from fail. Board pass is used for train. Goggle and wear swimsuit is used for swim. Swim is used for exercise. File share program is used for organize thing. Train is used for ride. Lake is not used for differentiate pass from fail. Lake is not used for 50 year anniversary. Moral system is used for ride.
text: Swim is used for train.