Complex sentence: Kokura is also the name of the penultimate station on the southbound Sanyo Shinkansen line, which is owned by JR Kyushu and an important part of the company's rail network.
Split into simpler sentences: Kokura is also the name of the penultimate station on the southbound Sanyo Shinkansen line. It is owned by JR Kyushu and an important part of the company's rail network.