YOU SAID:
Dream is the person I am going to marry one day.
INTO JAPANESE
夢は私がいつか結婚する人です。
BACK INTO ENGLISH
My dream is that I will get married someday.
INTO JAPANESE
私の夢はいつか結婚することです。
BACK INTO ENGLISH
My dream is to get married someday.
INTO JAPANESE
私の夢はいつか結婚することです。
BACK INTO ENGLISH
My dream is to get married someday.
That didn't even make that much sense in English.