title: North Sea
context: The North Sea is a marginal sea of the Atlantic Ocean located between the United Kingdom (particularly England and Scotland), Denmark, Norway, Sweden, Germany, the Netherlands, Belgium and France. An epeiric (or "shelf") sea on the European continental shelf, it connects to the ocean through the English Channel in the south and the Norwegian Sea in the north. It is more than 970 kilometres (600mi) long and 580 kilometres (360mi) wide, with an area of around 570,000 square kilometres (220,000sqmi).
question: What is the size by area of the North Sea?
answers: 570,000 square kilometres