CREATE TABLE table_51267 ("Home team" CLOB, "Home team score" CLOB, "Away team" CLOB, "Away team score" CLOB, "Venue" CLOB, "Crowd" FLOAT, "Date" CLOB)

Who was the away team when the home team scored 18.9 (117)?
SELECT "Away team" FROM table_51267 WHERE "Home team score" = '18.9 (117)'
SELECT "Away team" FROM "table_51267" WHERE "Home team score" = '18.9 (117)'