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: "what is the meaning of great wall of china?" whose answer is "The Long Wall".
Each document should contain about 30 words, and these documents should contain useful information.

Query: meaning of great wall of china
Useful Output:

Doc 1: Historical Significance: The Great Wall of China is a symbol of China's rich history and cultural heritage. It provides a glimpse into the ancient dynasties
Doc 2: Great Wall of China, an extensive bulwark erected in ancient China, one of the largest building-construction projects ever undertaken.
Doc 3: a very long set of walls and towers in northern China that were built as a defence against attack from the north, mainly between the 14th and 17th centuries
Doc 4: The Great Wall of China is an ancient series of walls and fortifications located in northern China, built around 500 years ago.
Doc 5: The Great Wall of China is an ancient series of walls and fortifications, totaling more than 13,000 miles in length, located in northern China.