这句话中的which引导的定语从句是谁的定语?

题目

这句话中的which引导的定语从句是谁的定语?
A Democrat is a member or supporter of a particular political party 【which】 has the word 'democrat' or 'democratic' in its title,for example the Democratic Party in the United States.
将上述句子抽象,得出下面的句型：[A] is [B] of [C] which ...
请问,上述抽象出的句型中which是[A][B][C]中哪一个的定语?为什么?

答案

which定语从句修饰party,即你说的C