Suppose The Lighthouse of Alexandria, sometimes called the Pharos of Alexandria, was a lighthouse built by the Ptolemaic Kingdom between 280 and 247 BC on the island of Pharos in Alexandria, Egypt. With a height estimated at between 394 and 449 feet, it was one of the tallest man-made structures in the world for many centuries. The lighthouse was an architectural marvel and served as a navigational aid for ships entering the busy harbor of Alexandria.
Can we infer that "The Lighthouse of Alexandria was built in the 20th century."? Yes, no, or maybe?