CREATE TABLE table_name_73 (against INT, venue VARCHAR, date VARCHAR)

Name the average Against that has a Venue of twickenham , london on 25 november 1978?
SELECT AVG(against) FROM table_name_73 WHERE venue = "twickenham , london" AND date = "25 november 1978"
SELECT AVG("against") FROM "table_name_73" WHERE "25 november 1978" = "date" AND "twickenham , london" = "venue"