CREATE TABLE table_204_577 (id NUMBER, "name" CLOB, "first operational" CLOB, "numeral system" CLOB, "computing mechanism" CLOB, "programming" CLOB, "turing complete" CLOB)

what operational date is next to zuse z3 ?
SELECT "first operational" FROM table_204_577 WHERE "name" = 'zuse z3'
SELECT "first operational" FROM "table_204_577" WHERE "name" = 'zuse z3'