YOU SAID:
A whale on the roof is playing the voila.
INTO JAPANESE
屋上のクジラが出来上がりをしている。
BACK INTO ENGLISH
The rooftop whale is ready.
INTO JAPANESE
屋上のクジラの準備ができました。
BACK INTO ENGLISH
The rooftop whale is ready.
That didn't even make that much sense in English.