A woman is sitting beside to him who is his wife

问题描述:

A woman is sitting beside to him who is his wife
A woman who is sitting beside to him is his wife
两个哪个对?

第二句.一个句子里只能有一个谓语动词.
而第一句有两个谓语动词is,显然是错的.
第二句是定语从句,A woman (who is sitting beside to him) is his wife.