CREATE TABLE table_14484 ("Name" CLOB, "Number" FLOAT, "Released" FLOAT, "Film" CLOB, "Pieces" FLOAT)

What is the number for Chauchilla Cemetery Battle with less than 511 pieces?
SELECT AVG("Number") FROM table_14484 WHERE "Pieces" < '511' AND "Name" = 'chauchilla cemetery battle'
SELECT AVG("Number") FROM "table_14484" WHERE "Name" = 'chauchilla cemetery battle' AND "Pieces" < '511'