CREATE TABLE table_66177 ("play" TEXT, "author" TEXT, "company" TEXT, "base" TEXT, "country" TEXT)

What Country has the Play The Libation Bearers a Base of Mecklenburg?
SELECT "country" FROM table_66177 WHERE "base" = 'mecklenburg' AND "play" = 'the libation bearers'
SELECT "country" FROM "table_66177" WHERE "base" = 'mecklenburg' AND "play" = 'the libation bearers'