YOU SAID:

Those were the posters who made the thread good when it still was.

INTO JAPANESE

それらは、それがまだあったときに糸を良くしたポスターでした。

BACK INTO ENGLISH

They were posters that made the thread better when it was still there.

INTO JAPANESE

それらは、スレッドがまだそこにあるときにスレッドをより良くするポスターでした。

BACK INTO ENGLISH

They were posters that made threads better when they were still there.

INTO JAPANESE

彼らはまだそこにいるときにスレッドをより良くするポスターでした。

BACK INTO ENGLISH

They were posters that made the thread better when they were still there.

INTO JAPANESE

彼らはまだそこにいるときにスレッドをより良くするポスターでした。

BACK INTO ENGLISH

They were posters that made the thread better when they were still there.