Question: what is the surface area of the lagoon southwest of Dreverna
Sentence (from "Curonian Lagoon"): The Curonian Lagoon (or Bay, Gulf; Russian: "Куршский залив" , Lithuanian: "Kuršių marios" , Polish: "Zalew Kuroński" , German: "Kurisches Haff" , Latvian: "Kuršu joma" ) is separated from the Baltic Sea by the Curonian Spit.
Relevant evidence: No