How many number of site have May 1, 2004 as the date?
CREATE TABLE "table1_22098274_1" (
  "date" text,
  "time" text,
  "opponent" text,
  "ranknum" text,
  "site" text,
  "result" text,
  "attendance" text,
  "winning_pitcher" text,
  "losing_pitcher" text
);
SELECT COUNT("site") FROM "table1_22098274_1" WHERE "date"='May 1, 2004';