다음 중 밑줄 친 부분의 쓰임이 어색한 것은?
① golf was known as “the royal game.”
② he made a lot of money by living a thrifty life and is known as a rich man.
③ mr. russel is known as the godfather of hip-hop.
④ hokkaido is known as deep snow in winter.
⑤ he is known as the grand master of chess teachers.

쓰임이 다른점을 알려 주세요... 답은 4번인것 같은데.....