Complex sentence: Hamilton Railway Station is a junction on the North Island Main Trunk serving the city of Hamilton in the Waikato region of New Zealand, located in Frankton, hence the name Frankton Junction, which it had for most of its existence.
Split into simpler sentences: Hamilton Railway Station serves the city of Hamilton in the Waikato region of New Zealand. It is located in the suburb of Frankton, hence the station's former name Frankton Junction, its name for most of its existence.