Suppose The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials, which were built along the historical northern borders of China to protect the Chinese states and empires against the raids and invasions of nomadic groups. The Great Wall is recognized as one of the most impressive architectural feats in history and a UNESCO World Heritage Site.
Can we infer that "The Great Wall of China was built in the 20th century."?