CREATE TABLE table_27177 ("Year" CLOB, "Amiga demo" CLOB, "PC demo" CLOB, "C64 demo" CLOB, "Amiga intro" CLOB, "PC intro" CLOB)

Who won best amiga demo when tribes ( pulse & melon dezign) won best pc demo?
SELECT "Amiga demo" FROM table_27177 WHERE "PC demo" = 'Tribes ( Pulse & Melon Dezign)'
SELECT "Amiga demo" FROM "table_27177" WHERE "PC demo" = 'Tribes ( Pulse & Melon Dezign)'