In high-speed rail, HSR sector, major contracts signed in the past quarter, including train control center, TCC, solution for sections of the Taiyuan to Jiaozuo line, Zhengzhou to Wangzhou line and the inter-city line of Southern Sichuan.
Refer to the input text as context and select the correct relationship between 'Zhengzhou' and 'line' from the available options.
Options: owner of, distributed by, owned by, parent organization