YOU SAID:
What is the time he thought he left the house yesterday
INTO JAPANESE
彼が昨日家を出たと思ったのは何時ですか
BACK INTO ENGLISH
What is the thought that he came home yesterday?
INTO JAPANESE
彼が昨日帰宅したという考えは何ですか?
BACK INTO ENGLISH
What is the idea that he returned home yesterday?
INTO JAPANESE
彼が昨日帰国したという考えは何ですか?
BACK INTO ENGLISH
What is the idea that he returned home yesterday?
That didn't even make that much sense in English.