Complex sentence: He pled guilty to witness tampering in his murder trial so that he could marry his fiancée, Jennifer Zolnowski, a bank teller and an alleged accomplice in the case; she gave birth to their son on 31 August 2004.
Split into simpler sentences: He pled guilty to witness tampering in his murder trial so that he could marry his fiancée, Jennifer Zolnowski, a bank teller and his alleged accomplice. She gave birth to their son on 31 August 2004.