What is the sea which is adjacent to the city in which Vladimir Portnoi was born?
Vladimir Portnoi: Vladimir Portnoi (June 9, 1931 – February 19, 1984) was a Soviet gymnast. Vladimir Portnoi:  He is Jewish, and was born in Odessa. Odessa: Odessa or Odesa (Ukrainian: Оде́са , ] ; Russian: Оде́сса ; ] ) is the third most populous city of Ukraine and a major tourism center, seaport and transportation hub located on the northwestern shore of the Black Sea.
Black Sea