of在从句中discounted because of a trat that goes to the core of who they are.of作什么成分
问题描述：
of在从句中
discounted because of a trat that goes to the core of who they are.
of作什么成分
答
because of 因为， of是介词
because of a trat 做原因状语
that goes to the core of who they are 定语从句修饰 trat
the core of ...什么的核心，中心
who they are 宾语从句，做of 宾语，
the core of who they are 他们是谁这个问题的核心...
答
yiwen
答
of是介词,后面是其宾语（从句）who they are.
两者一起构成介词/介宾短语,做the core的后置定语.