marathon is a type of sports which asked the player to run a long way.
foal is baby horse.
Adventure is a journey that is strange and exiting and often dangerous.Such like "Hucklebarry Finn's Adventure"(哈克贝利·芬历险记)
Hockey is a game that one plays on a filed,using a stick to hit the ball and scoring.It is popular in America.
Genre is a class of works of art or literature according to their type of subject.