CREATE TABLE table_51750 ("Home team" CLOB, "Home team score" CLOB, "Away team" CLOB, "Away team score" CLOB, "Venue" CLOB, "Crowd" FLOAT, "Date" CLOB)

What is the score for the away team of north melbourne?
SELECT "Away team score" FROM table_51750 WHERE "Away team" = 'north melbourne'
SELECT "Away team score" FROM "table_51750" WHERE "Away team" = 'north melbourne'