Complex sentence: This project was a joint undertaking by the Waimakariri District Council and the Oxford Promotions and Action Committee (OPAC), but they ran out of money and did not finish both sides of the street.
Split into simpler sentences: This project was a joint undertaking by the Waimakariri Council and the Oxford Promotions and Action Committee (OPAC). However they ran out of money and never finished both sides of the street.