英语语法（句子结构At the center is Ms.Rosales,55,（who was born in Mex

At the center is Ms.Rosales,55,who was born in Mexico and shares a home with José Carlos Bergantinos,an art consultant and collector from Spain,with whom she once operated a gallery in Manhattan,exhibiting the work of artists like Pablo Picasso and Andy Warhol.
请高手分析一下句子中with whom的用法和句子结构
答：这句话的主句是At the center is Ms.Rosales.55是同位语.who-从句是非限制性定语从句（至句尾）.
在这个从句中,又出现了一个人名Jose Carlos Bergantinos,后面又来了一个同位语an art consultant and collector form Spain.后面又来了一个非限制性定语从句,来对这个人的情况加以补充.而这个从句后面又有一个现在分词短语作状语,表示伴随情况：exhibiting ...

with whom she once operated a gallery in Manhattan, exhibiting the work of artists like Pablo Picasso and Andy Warhol. 定语从句

最近看到一本语法书，很肯定地说到英语的句子结构有5种：S+V等等~ 但是我记得以前英语老师的说法是：英语的句子只有“主谓结构”和“主系表”结构

with whom she once operated a gallery in Manhattan, exhibiting the work of artists like Pablo Picasso and Andy Warhol和前面那句who.....都是定语从句，都是来修饰Ms. Rosales的。本句可以写成whom she once operated with a gallery ...

with whom 定语从句
she once operated a gallery with whom (José Carlos Bergantinos) in Manhattan