Complex sentence: Fortuyn promised the reader he would dwell on his successess and failings in his parliamentary career in the successor to "Puinhopen", which had been planned to be released at the end of the next legislature in four years time.
Split into simpler sentences: Fortuyn promised the reader he would dwell on his successess and failings in his parliamentary career in the successor to "Puinhopen". It had been planned to be released at the end of the next legislature in four years time.