CREATE TABLE "matches" (
  "opposing_team" text,
  "against" real,
  "date" text,
  "venue" text,
  "status" text
);

Question: Which the lowest Against has a Status of tour match, and a Venue of ravenhill , belfast?
SQL: SELECT MIN("against") FROM "matches" WHERE "status"='tour match' AND "venue"='ravenhill , belfast';

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

Question: Name the highest Against on 21 november 1978?
SQL: SELECT MAX("against") FROM "matches" WHERE "date"='21 november 1978';

Question: Name the Against of Venue of brewery field , bridgend?
SQL: SELECT "against" FROM "matches" WHERE "venue"='brewery field , bridgend';

Question: Name the Status with an Against larger than 15?
SQL: SELECT "status" FROM "matches" WHERE "against">15;