Suppose The Great Wall of China is a UNESCO World Heritage Site that stretches over 13,000 miles across northern China. Built to protect against invasions from nomadic tribes, the wall is a popular tourist attraction visited by millions of people each year. In this photo, tourists can be seen walking along a restored section of the wall.
Can we infer that "The Great Wall of China was built in the 20th century"? Yes, no, or maybe?