<https://jp.cointelegraph.com/news/coinbase-follows-ftx-and-binance-in-launching-nft-marketplace>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://jp.cointelegraph.com/news/coinbase-follows-ftx-and-binance-in-launching-nft-marketplace>