Suppose Tokyo Tower is a communications and observation tower in the Shiba-koen district of Minato, Tokyo, Japan. Completed in 1958, the tower stands at 332.9 meters (1,092 ft) and was the tallest artificial structure in Japan until 2010 when it was surpassed by the Tokyo Skytree.
Can we infer that "Tokyo Skytree is the tallest artificial structure in Japan."? Yes, no, or maybe?