谁能帮我找出这一段的语法 定语从句和独立主格这两个 跪求！~~

谁能帮我找出这一段的语法 定语从句和独立主格这两个 跪求！~~
Years ago, there was a very wealthy man who, with his devoted young son, shared a passion for art collecting. Together they travelled around the world, adding only the finest art treasures to their collection. Priceless works by Picasso, Van Gogh, Monet and many others adorned the walls of their family estate. The widowed elder man looked on with satisfaction as his only child became an experienced art collector. The son's trained eye and sharp business mind caused his father to beam with pride as they dealt with art collectors around the world.