请帮忙分析一下句子成份：A Thankgiving Day article in the newspaper told of a school teacher who asked her class of first graders to draw a picture of something they were thankful for.
A Thankgiving Day article 主语
in the newspaper 介词短语作定语
told of 谓语
a school teacher 宾语
who asked her class of first graders to draw a picture of something 定语从句,修饰teacher
they were thankful for.定语从句,修饰something