Complex sentence: PKP Szybka Kolej Miejska w Trójmieście is a limited company, part of PKP Group, founded in 2001 after PKP had been split into several companies in order to meet European Union standards.
Split into simpler sentences: PKP Szybka Kolej Miejska w Trójmieście is a limited company. It is part of the PKP Group, which was founded in 2001 after PKP had been split into several companies in order to meet European Union standards.