You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "Which city is located farther south in China, Lingwu or Changsha?" whose answer is Changsha.
Each document should contain about 30 words, and these documents should contain useful information.

Query: latitude of Lingwu, China
Useful Output:

Doc 1: China Latitude and longitude - Latitude and longitude of China is 32.09566 degrees  Lingwu, 38.10770, 106.339989, 65,276. Jiaohe, 43.72908, 127.345161, 207,818.
Doc 2: Latitude and longitude of China is 35.0000 degrees N and 103.0000 degrees  Lingwu, 38°06'N, 106°20'E. Lingyuan, 41°10'N, 119°15'E. Linhai, 28°50'S, 121°08'E.
Doc 3: Analysis of ionospheric features in middle and low latitude region of China during the geomagnetic storm in March 2015.  MA Bin, HUANG Ling, WU
Doc 4: Latitude and longitude of Lingwu · Satellite map of Lingwu.
Doc 5: Lingwu Meng · Xiaoming You · Sheng Liu · Shundong Li. Aiming at Travel Salesman Problem (TSP) that ant colony