老师求助：帮忙分析下这句话的主谓宾、从句、以及修饰成分、分别是什么吧？ of which和前后什么关系啊？

Question

At the core of the drawing is a computer,on the screen of which we can see a scrubwoman,waving the broom in her hand,is trying to eliminate rumors out of the Internet。上面那个on the screen of which
整体是不是相当于一个特殊的关系副词啊？并且是个非限定性定从对吧？关系副词常见的都是介词+关系代词（先行词）但是上面多了on the screen我见的就很少，比较笨，谢谢老师理解和帮助ing，没有财富值了不好意思了老师……