英语长难句结构分析，句子的主体成分是什么？

Question

For Facebook, the move to work with the Congressional committees underscored how far the social network has strayed from being a mere technology company and how it has increasingly had to deal with the unintended consequences of the tools it provides to reach the more than 2 billion people who use the site regularly.

Answer 1

【状语For Facebook】, 【主语the move (同位语to work with the Congressional committees)】 【谓语underscored】 【宾语从句1 how far the social network has strayed from being a mere technology company】 and 【宾语从句2 how it has increasingly had to deal with the unintended consequences of the tools it provides to reach the more than 2 billion people who use the site regularly】.追问

宾语从句2的结构能不能再分析一下？

追答

【宾语从句2 how (主语it) (谓语has increasingly had to deal with) (宾语the unintended consequences) (定语of the tools )】

Answer 2

For Facbook（状语）,the move（主语，后置不定式做定语）+ underscored （动词）+how far...and how(并列宾语从句)

Answer 3

主语：the move(to后面的修饰主语)，谓语undersored 剩下的是宾语