YOU SAID:
The candles are on the birthday cake
INTO JAPANESE
キャンドルは誕生日のケーキにあります
BACK INTO ENGLISH
Candle is on birthday cake
INTO JAPANESE
キャンドルは誕生日のケーキです
BACK INTO ENGLISH
Candle is a birthday cake
INTO JAPANESE
キャンドルは誕生日のケーキです
it is unlikely that this phrase will ever reach equilibrium