What is Time, when Ground is Waverley Park, and when Away Team is Footscray?
CREATE TABLE "round_of_16" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "ground" text,
  "date" text,
  "time" text
);
SELECT "time" FROM "round_of_16" WHERE "ground"='waverley park' AND "away_team"='footscray';