Who was the visiting team on April 8 where more than 19,141 were in attendance?
CREATE TABLE "april" (
  "date" text,
  "visitor" text,
  "score" text,
  "home" text,
  "leading_scorer" text,
  "attendance" real,
  "record" text
);
SELECT "visitor" FROM "april" WHERE "attendance">'19,141' AND "date"='april 8';