Complex sentence: In 1959, it became a member of the Oshawa Central Council of Neighbourhood Associations (OCCNA) and as part of the Neighbourhood Association Sports Committee (NASC), the NA facilitates organized youth sports competitions.
Split into simpler sentences: In 1959, it became a member of the Oshawa Central Council of Neighbourhood Associations. As part of the Neighbourhood Association Sports Committee, the NA facilitates organized youth sports competitions.