Complex sentence: Jervis Bay Territory, previously an exclave of the ACT but now a separate territory, is geographically located on the coast of NSW, just south of the towns of Vincentia and Huskisson, with which it shares a postcode.
Split into simpler sentences: Jervis Bay Territory, once an exclave of the ACT but now a separate territory, is geographically located on the coast of NSW. It is just south of the towns of Vincentia and Huskisson, with which it shares a postcode.