14b. Did you gain permanent resident status through marriage to a U.S. citizen or lawful permanent resident?
"即使是derivative EB類綠卡,也是通過婚姻拿到的." is not what I meant, because your hu*****and was not a U.S. citizen when you got married.
The reason I chose the later portion because of its meanings by word, with connection to 14a. I may be wrong tho.