CREATE TABLE table_63524 ("Club" CLOB, "League" CLOB, "Sport" CLOB, "Venue" CLOB, "Established" FLOAT, "Capacity" FLOAT)

What sport is the rayo vallecano club in?
SELECT "Sport" FROM table_63524 WHERE "Club" = 'rayo vallecano'
SELECT "Sport" FROM "table_63524" WHERE "Club" = 'rayo vallecano'