Suppose The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials, generally built along an east-to-west line across the historical northern borders of China. The current wall spans approximately 13,171 miles in total length and was originally built as a defensive barrier against invasions from nomadic tribes.
Can we infer that "The Great Wall of China was built in the 20th century"? Yes, no, or maybe?