CREATE TABLE table_51578 ("Club" TEXT, "Leagues" TEXT, "Venue" TEXT, "Location" TEXT, "Capacity" FLOAT, "Established" FLOAT)

What is the capacity at the nop aquatic centre, established after 1929?
SELECT COUNT("Capacity") FROM table_51578 WHERE "Venue" = 'nop aquatic centre' AND "Established" > '1929'
SELECT COUNT("Capacity") FROM "table_51578" WHERE "Established" > '1929' AND "Venue" = 'nop aquatic centre'