YOU SAID:

there was an old man of the hague, whose ideas were excessively vague

INTO JAPANESE

ヘーグの老人がいたが、その考えは非常に漠然としていた

BACK INTO ENGLISH

There was an old man from The Hague whose ideas were very vague

INTO JAPANESE

ハーグ出身の老人がいて、その考えは非常に漠然としていました

BACK INTO ENGLISH

There was an old man from The Hague whose ideas were very vague