YOU SAID:

Thieves stole the paintings and they were sold.

INTO JAPANESE

泥棒は絵画を盗み、彼らが販売されました。

BACK INTO ENGLISH

The thief stole the painting, they were sold.

INTO JAPANESE

絵を盗んだ泥棒は、彼らが販売されました。

BACK INTO ENGLISH

The thief who stole the painting, they were sold.

INTO JAPANESE

絵画を盗んだ泥棒、彼らは販売されました。

BACK INTO ENGLISH

The thief who stole the painting, they were sold.