Information:  - Iran (, also , ; ' ), also known as Persia, officially the Islamic Republic of Iran (' ), is a sovereign state in Western Asia. It is bordered to the northwest by Armenia, the "de facto" Nagorno-Karabakh Republic, and Azerbaijan; to the north by the Caspian Sea; to the northeast by Turkmenistan; to the east by Afghanistan and Pakistan; to the south by the Persian Gulf and the Gulf of Oman; and to the west by Turkey and Iraq. Comprising a land area of , it is the second-largest country in the Middle East and the 18th-largest in the world. With 82.8 million inhabitants, Iran is the world's 17th-most-populous country. It is the only country with both a Caspian Sea and an Indian Ocean coastline. The country's central location in Eurasia and Western Asia, and its proximity to the Strait of Hormuz, make it of great geostrategic importance. Tehran is the country's capital and largest city, as well as its leading economic center.  - Khwja Shams-ud-Dn Muammad fe-e Shrz, known by his pen name Hafez ("fe" 'the memorizer; the (safe) keeper'; 1325/261389/90), was a Persian poet who "lauded the joys of love and wine but also targeted religious hypocrisy." His collected works are regarded as a pinnacle of Persian literature and are to be found in the homes of most people in Iran, who learn his poems by heart and still use them as proverbs and sayings. His life and poems have been the subject of much analysis, commentary and interpretation, influencing post-14th century Persian writing more than any other author.  - Shiraz ("Šrz", ) is the sixth most populous city of Iran and the capital of Fars Province (Old Persian as Pârsâ). At the 2011 census, the population of the city was 1,460,665 and its built-up area with "Shahr-e Jadid-e Sadra" (Sadra New Town) was home to 1,500,644 inhabitants. Shiraz is located in the southwest of Iran on the "Roodkhaneye Khoshk" (The Dry River) seasonal river. It has a moderate climate and has been a regional trade center for over a thousand years. Shiraz is one of the oldest cities of ancient Persia.  - Qazvin (, also Romanized as "Qazvn", "Caspin", "Qazwin", or "Ghazvin") is the largest city and capital of the Province of Qazvin in Iran. Qazvin was an ancient capital in the Persian Empire and nowadays is known as the calligraphy capital of Iran. It is famous for its Baghlava, carpet patterns, poets, political newspaper and pahlavi (Middle Persian) influence on its accent. At the 2011 census, its population was 381,598.  - Fars Province ("Ostn-e Frs") also known as Pars or Persia in historical context, is one of the thirty-one provinces of Iran and known as the cultural capital of Iran. It is in the south of the country, in Iran's Region 2, and its administrative center is Shiraz. It has an area of 122,400 km². In 2011, this province had a population of 4.6 million people, of which 67.6% were registered as urban dwellers (urban/suburbs), 32.1% villagers (small town/rural), and 0.3% nomad tribes. The etymology of the word "Persian" (From Latin "Persia", from Ancient Greek (Persis)), found in many ancient names associated with Iran, is derived from the historical importance of this region. Fars Province is the original homeland of the Persian people.  - Nezam od - Din Ubeydollah Zâkâni ( Persian :       ) , or simply Ubayd - i Zkni ( Persian :     c. 1300 -- 1371 CE ) , was a Persian poet and satirist of the 14th century ( Mongol Period ) from the city of Qazvin . He studied in Shiraz , Iran under the best masters of his day , but eventually moved back to his native town of Qazvin . He however preferred Shiraz to Qazvin , as he was a court poet in Shiraz for Shah Abu Ishaq , where a young Hafez was present as well . His work is noted for its satire and obscene verses , often political or bawdy , and often cited in debates involving homosexual practices . He wrote the Resaleh - ye Delgosha , as well as Akhlaq al - Ashraf ( `` Ethics of the Aristocracy '' ) and the famous humorous fable Masnavi Mush - O - Gorbeh ( Mouse and Cat ) , which was a political satire . His non-satirical serious classical verses have also been regarded as very well written , in league with the other great works of Persian literature . He is one of the most remarkable poets , satirists and social critics of Iran ( Persia ) , whose works have not received proper attention in the past . His books are translated into Russian , Danish , Italian , English , and German ( by Joachim Wohlleben , 2009 : seemingly the first translation of the complete work into a Western language ) .  - The Old Persian language is one of the two directly attested Old Iranian languages (the other being Avestan). Old Persian appears primarily in the inscriptions, clay tablets, and seals of the Achaemenid era (c. 600 BCE to 300 BCE). Examples of Old Persian have been found in what is now present-day Iran, Romania (Gherla), Armenia, Bahrain, Iraq, Turkey and Egypt, the most important attestation by far being the contents of the Behistun Inscription (dated to 525 BCE). Recent research into the vast Persepolis Fortification Archive at the Oriental Institute at the University of Chicago have unearthed Old Persian tablets (2007). This new text shows that the Old Persian language was a written language in use for practical recording and not only for royal display.  - Shah (pronounced , "king") is a title given to the emperors, kings, princes and lords of Iran (historically also known as Persia). It was also adopted by the kings of Shirvan (a historical Iranian region in Transcaucasia) namely the Shirvanshahs, the rulers and offspring of the Ottoman Empire (in that context spelled as "eh"), Mughal emperors of the Indian Subcontinent, the Bengal Sultanate, as well as in Georgia and Afghanistan. In Iran (Persia and Greater Persia) the title was continuously used; rather than King in the European sense, each Persian ruler regarded himself as the "Šhanšh" (King of Kings) or Emperor of the Persian Empire.  - Middle Persian is the Middle Iranian language or ethnolect of southwestern Iran that during the Sasanian Empire (224654) became a prestige dialect and so came to be spoken in other regions of the empire as well. Middle Persian is classified as a Western Iranian language. It descends from Old Persian and is the linguistic ancestor of Modern Persian.  - Persian literature is one of the world's oldest literatures. It spans two-and-a-half millennia, though much of the pre-Islamic material has been lost. Its sources have been within Greater Iran including present-day Iran, Iraq, the Caucasus, and Turkey, regions of Central and South Asia where the Persian language has historically been either the native or official language. For instance, Rumi, one of best-loved Persian poets, born in Balkh or Vakhsh (in what is now Afghanistan), wrote in Persian, and lived in Konya, then the capital of the Seljuks in Anatolia. The Ghaznavids conquered large territories in Central and South Asia and adopted Persian as their court language. There is thus Persian literature from Iran, Mesopotamia, Azerbaijan, the wider Caucasus, Turkey, western parts of Pakistan, India, Tajikistan and other parts of Central Asia. Not all Persian literature is written in Persian, as some consider works written by ethnic Persians in other languages, such as Greek and Arabic, to be included. At the same time, not all literature written in Persian is written by ethnic Persians or Iranians, as Turkic, Caucasian, and Indic poets and writers have also used the Persian language in the environment of Persianate cultures.    What entity does 'ubayd zakani' has the relation 'country of citizenship' with?
The answer to this question is:
tajikistan