YOU SAID:
what did they want to happen at this meeting
INTO JAPANESE
彼らはこの会議で何をしたいのですか
BACK INTO ENGLISH
What do they want to do at this meeting
INTO JAPANESE
この会議で彼らは何をしたいのですか
BACK INTO ENGLISH
What do they want to do at this meeting
That didn't even make that much sense in English.