CREATE TABLE table_50118 ("Points" FLOAT, "Score" CLOB, "Premiers" CLOB, "Runners Up" CLOB, "Details" CLOB)

Which premier team played the 1951 NSWRFL Grand Final?
SELECT "Premiers" FROM table_50118 WHERE "Details" = '1951 nswrfl grand final'
SELECT "Premiers" FROM "table_50118" WHERE "Details" = '1951 nswrfl grand final'