CREATE TABLE table_204_191 (id NUMBER, "title" CLOB, "artist" CLOB, "year" CLOB, "location/gps coordinates" CLOB, "material" CLOB, "dimensions" CLOB, "owner" CLOB)

how many are owned by the national park service ?
SELECT COUNT(*) FROM table_204_191 WHERE "owner" = 'national park service'
SELECT COUNT(*) FROM "table_204_191" WHERE "owner" = 'national park service'