Take context from the input text and decide on the accurate relationship between 'Zhengzhou' and 'line' from the options provided.
Options: distributed by, parent organization, owner of, owned by

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.
owner of