Definition: In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).
Input: Context: Mytilene ("" ) is an ancient city founded in the 11th century BC. Mytilene is the capital and port of the island of Lesbos and also the capital of the North Aegean Region. The seat of governor of the North Aegean Region is Mytilene. Mytilene is also one of 13 municipalities (counties) on the island of Lesbos. Mytilene is built on the southeast edge of the island. It is also the seat of a metropolitan bishop of the Orthodox church., The euro (sign: €; code: EUR) is the official currency of the eurozone, which consists of 19 of the member states of the European Union: Austria, Belgium, Cyprus, Estonia, Finland, France, Germany, Greece, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Portugal, Slovakia, Slovenia, and Spain. The currency is also officially used by the institutions of the European Union and four other European countries, as well as unilaterally by two others, and is consequently used daily by some 337 million Europeans . Outside of Europe, a number of overseas territories of EU members also use the euro as their currency., Mytilene Municipal Stadium ( Greek :    ) is a multi-use stadium in Mytilene , Greece . It is currently used mostly for football matches and is the home stadium of Kalloni . The stadium holds 3,000 people , all - seated ., Lesbos, sometimes referred to as "Mytilini" after its capital, is a Greek island located in the northeastern Aegean Sea. It has an area of with of coastline, making it the third largest island in Greece. It is separated from Turkey by the narrow Mytilini Strait and in late Palaeolithic/Mesolithic times was joined to the Anatolian mainland before the end of the last glacial period., Greece (' ), officially the Hellenic Republic (Greek: ' ), historically also known as Hellas ("" ), is a country in southeastern Europe. 
Greece's population is approximately 10.955 million as of 2015. Athens is the nation's capital and largest city, followed by Thessaloniki., Subject: mytilene municipal stadium, Relation: operator, Options: (A) austria (B) belgium (C) france (D) germany (E) italy (F) lesbos (G) portugal
Output:
lesbos