CREATE TABLE "round_of_16" (
  "team_1" text,
  "score" text,
  "team_2" text,
  "1st_round" text,
  "2nd_round" text
);

Question: what is the 1st round when team 1 is stade lavallois (d2)?
SQL: SELECT "1st_round" FROM "round_of_16" WHERE "team_1"='stade lavallois (d2)';

Question: what is the 1st round when team 2 is usl dunkerque (d2)?
SQL: SELECT "1st_round" FROM "round_of_16" WHERE "team_2"='usl dunkerque (d2)';

Question: who is team 1 when team 2 is usl dunkerque (d2)?
SQL: SELECT "team_1" FROM "round_of_16" WHERE "team_2"='usl dunkerque (d2)';