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 years after the george gordon meade memorial was built was the victims of communism memorial built ?
SELECT (SELECT "year" FROM table_204_191 WHERE "title" = 'victims of communism memorial') - (SELECT "year" FROM table_204_191 WHERE "title" = 'george gordon meade memorial')
SELECT (SELECT "year" FROM "table_204_191" WHERE "title" = 'victims of communism memorial') - (SELECT "year" FROM "table_204_191" WHERE "title" = 'george gordon meade memorial')