Passage: The Sea of Marmara (; Turkish: Marmara Denizi), also known as the Sea of Marmora or the Marmara Sea, and in the context of classical antiquity as the Propontis is the inland sea, entirely within the borders of Turkey, that connects the Black Sea to the Aegean Sea, thus separating Turkey's Asian and European parts. The Bosphorus strait connects it to the Black Sea and the Dardanelles strait to the Aegean Sea. The former also separates Istanbul into its Asian and European sides. The Sea of Marmara is a small sea with an area of 11,350 km2 (4,380 sq mi), and dimensions 280 km × 80 km (174 mi × 50 mi). Its greatest depth is 1,370 m (4,490 ft).

Question: The Bosphorus Strait separates what country in two continents?
Istanbul