CREATE TABLE table_10655 ("Concession" CLOB, "Date" FLOAT, "Grantee" CLOB, "Size" CLOB, "County" CLOB)

Tell me the county for mariano castro
SELECT "County" FROM table_10655 WHERE "Grantee" = 'mariano castro'
SELECT "County" FROM "table_10655" WHERE "Grantee" = 'mariano castro'