CREATE TABLE "round_1" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);

Question: Tell me the home team score for essendon
SQL: SELECT "home_team_score" FROM "round_1" WHERE "home_team"='essendon';