Complex sentence: It is the second rolling stock to be served on Taipei Metro Line 1 which was being operated by Taipei Metro and they were paid 101 2-car train sets to be paid 202 cars to be deployed.
Split into simpler sentences: It is the second rolling stock to be on Taipei Metro Line 1 which was being operated by Taipei Metro. They were paid 101 2-car train sets to be paid 202 cars to be deployed.