[SAS] 쌍따옴표(" ")를 못 읽어요

DATA mysas.exam;
INPUT id $ name $ mid final;
CARDS;
001 K 10 40
002 Y 15 10
001 K 50 15
001 P 20 .
;
RUN;
DATA mysas.exam1;
SET mysas.exam;
x=30;
major="통계학"; major_id="STA"||id; mean=(mid+final)/2; y=mid**3; 
LABEL name="이름" mid="중간성적" final="기말성적";
RUN;