Complex sentence: Pafawag had been building for PKP Intercity between 1997 and 2002, after being taken over by Adtranz, which built the electric locomotives EU11 and EU43, but never reached the Polish railway tracks due to a financial problem by the client.
Split into simpler sentences: Pafawag had been building for PKP Intercity between 1997 and 2002, after being taken over by Adtranz. It built the electric locomotives EU11 and EU43, but they never reached the Polish railway tracks due to a financial problem by the client.