CREATE TABLE table_61414 ("Tie no" TEXT, "Home team" TEXT, "Score" TEXT, "Away team" TEXT, "Attendance" FLOAT)

Which Score has an Attendance larger than 16,851, and an Away team of sheffield united?
SELECT "Score" FROM table_61414 WHERE "Attendance" > '16,851' AND "Away team" = 'sheffield united'
SELECT "Score" FROM "table_61414" WHERE "Attendance" > '16,851' AND "Away team" = 'sheffield united'