Conversation so far:
What happened in 2017 to Mohammad Amir?
Amir played his second ICC ODI tournament in 2017 ICC Champions Trophy
Who was Mohammad Amir playing for in the 2017 ICC Champions Trophy?
Amir was pivotal for helping Pakistan win 2017 ICC Champions Trophy
Did Mohammad Amir do well the 2017 ICC Champions Trophy tournament?
Amir was pivotal for helping Pakistan win 2017 ICC Champions Trophy by claiming top three wickets against arch-rivals India in the Final.

Question: Who did they play in the semi finals?
Self-contained rewrite: Who did Pakistan play in the semi finals of the 2017 ICC Champions Trophy?