Information:  - Axion estin ( Greek :   , Slavonic : ó é , Dostóino yes ) , or It is Truly Meet , is a megalynarion and a theotokion , i.e. a magnification of and a Hymn to Mary which is chanted in the Divine Services of the Eastern Orthodox and Eastern Catholic Churches . It is a troparion and a sticheron composed in honor of the Theotokos ( i.e. the Virgin Mary ) . The same name also refers to a style of icon of the Theotokos .  - An icon (from Greek "eikn" "image") is a religious work of art, most commonly a painting, from Eastern Christianity and certain Eastern Catholic churches. The most common subjects include Christ, Mary, saints and/or angels. Though especially associated with "portrait" style images concentrating on one or two main figures, the term also covers most religious images in a variety of artistic media produced by Eastern Christianity, including narrative scenes.  - The Eastern Orthodox Church, also known as the Orthodox Church, or officially as the Orthodox Catholic Church, is the second largest Christian church and one of the oldest current religious institutions in the world. The Eastern Orthodox Church teaches that it is the One, Holy, Catholic and Apostolic Church established by Jesus Christ in his Great Commission to the apostles. It practices what it understands to be the original Christian faith and maintains the sacred tradition passed down from the apostles.  - Eastern Christianity consists of four main church families: the Eastern Orthodox Church, the Oriental Orthodox Churches, and the Assyrian Church of the East, as well as the Eastern Catholic Churches (that are in communion with Rome but still maintain an Eastern liturgy). The term is used in contrast with Western Christianity (namely the Latin Church and Protestanism). Eastern Christianity consists of the Christian traditions and churches that developed in the Middle East, Africa, Eastern Europe, Asia Minor, the Balkans, Southern India and parts of the Far East over several centuries. The term does not describe a single communion or religious denomination. Some Eastern churches have more in common historically and theologically with Western Christianity than with one another. The various Eastern churches do not normally refer to themselves as "Eastern", with the exception of the Assyrian Church of the East and its offshoots.  - The Megalynarion (Greek , "magnification", "that which magnifies"; also called "Velichaniye" in Church Slavonic) is a special hymn used in the Eastern Orthodox Church and those Eastern Catholic Churches that follow the Byzantine Rite. Depending on the local liturgical tradition, this hymn can be one of several.  - A troparion (Greek , plural: troparia, ; Church Slavonic: , "tropar") in Byzantine music and in the religious music of Eastern Orthodox Christianity is a short hymn of one stanza, or organised in more complex forms as series of stanzas.   - Byzantine music, in a narrow sense, is the music of the Byzantine Empire. Originally it consisted of songs and hymns composed to Greek texts used for courtly ceremonials, during festivals, or as paraliturgical and liturgical music. The ecclesiastical forms of Byzantine music are the best known forms today, because different Orthodox traditions still identify with the heritage of Byzantine music, when their cantors sing monodic chant out of the traditional chant books like sticherarion which in fact consisted of five books, and the heirmologion. Byzantine music did not disappear after the fall of Constantinople. Its traditions continued under the Patriarchate of Constantinople which was annexed by the Islamic Ottoman ruler Sultan Mehmed II in 1453, and granted administrative responsibilities over all Orthodox Christians. During the decline of the Ottoman Empire in the 19th century, burgeoning splinter nations in the Balkans declared autonomy or "autocephaly" against the Ecumenical Patriarchate. The new self-declared patriarchates were independent nations defined by their religion. In this context, Christian religious chant practiced in the Ottoman empire, Bulgaria and Greece among other nations, was based on the historical roots of the art tracing back to the Byzantine Empire, while the music of the Patriarchate created during the Ottoman period was often regarded as "post-Byzantine." This explains why Byzantine music refers to several Orthodox Christian chant traditions of the Mediterranean and of the Caucasus practiced in recent history and even today, and this article cannot be limited to the music culture of the Byzantine past.    After reading the paragraphs above, we are interested in knowing the entity with which 'axion estin' exhibits the relationship of 'country'. Find the answer from the choices below.  Choices: - byzantine empire  - greece  - india  - middle east  - ottoman empire  - world
A:
greece