Suppose The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials. It was built along the northern borders of China to protect the Chinese states and empires against the raids and invasions of nomadic groups. The wall stretches over 13,000 miles and is one of the most impressive architectural feats in history.
Can we infer that "The Great Wall of China was built in the 21st century."? Yes, no, or maybe?