36．And there were factories in occupations suchas metalworkwhereindividual contractors presided overwhat were essentiallyhandicraft proprietorshipsthat coexisted within asingle building．

(where引导定语从句；what引导的从句作presidedover的宾语)

仍然有像金属制造厂一类的工厂，在那里个体承包商管理在同一幢楼里的本质上是手工艺品所有人的工场。

分句1：And there were factories inoccupations such as metalwork

分句2：where individual contractorspresided over

分句3：what were essentially handicraftproprietorships

分句4：that coexisted within a singlebuilding

分句1是整个长句子的主句

分句2是分句1的定语从句

分句3是2的宾语从句

分句4是3的定语从句。

1和2嵌套

2和3嵌套

3和4嵌套