Suppose The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials, built along the northern borders of China to protect the Chinese states and empires against invasions and raids. The wall stretches over 13,000 miles and was built and rebuilt between the 5th century BC and the 16th century to protect the Chinese states and empires against invasions and raids.
Can we infer that "The Great Wall of China was built to keep out sea creatures."? Yes, no, or maybe?