Question: The ethnic group whose language, according to Xenophon, sounded like Armenian forms what percentage of the population in the world's largest pistachio producing country?

full_context: Document 1: Cheese: In 2014, world production of cheese from whole cow milk was 18.7 million tonnes, with the United States accounting for 29% (5.4 million tonnes) of the world total followed by Germany, France and Italy as major producers (table).
Document 2: Iran: Other non-governmental estimations regarding the groups other than the Persians and Azerbaijanis roughly congruate with the World Factbook and the Library of Congress. However, many scholarly and organisational estimations regarding the number of these two groups differ significantly from the mentioned census. According to many of them, the number of ethnic Azerbaijanis in Iran comprises between 21.6–30% of the total population, with the majority holding it on 25%.cd In any case, the largest population of Azerbaijanis in the world live in Iran.
Document 3: Demographics of Eritrea: The nation has nine recognized ethnic groups. According to SIL Ethnologue, Tigrayans make up about 50% of the population; the Tigre, who also speak a Semitic language, constitute around 30% of residents. Most of the rest of the population belong to other Afro - Asiatic - speaking communities of the Cushitic branch. Additionally, there are a number of Nilo - Saharan - speaking ethnic minorities and other smaller groups.
Document 4: Armenians: Eric P. Hamp in his 2012 Indo-European family tree, groups the Armenian language along with Greek and Ancient Macedonian ("Helleno-Macedonian") in the Pontic Indo-European (also called Helleno-Armenian) subgroup. In Hamp's view the homeland of this subgroup is the northeast coast of the Black Sea and its hinterlands. He assumes that they migrated from there southeast through the Caucasus with the Armenians remaining after Batumi while the pre-Greeks proceeded westwards along the southern coast of the Black Sea.
Document 5: Hazelnut: In the United States, Oregon accounted for 99% of the nation's production in 2014, having a crop value of $129 million that is purchased mainly by the snack food industry.
Document 6: Iran: In 2004, a large share of natural gas reserves in Iran were untapped. The addition of new hydroelectric stations and the streamlining of conventional coal and oil-fired stations increased installed capacity to 33,000 megawatts. Of that amount, about 75% was based on natural gas, 18% on oil, and 7% on hydroelectric power. In 2004, Iran opened its first wind-powered and geothermal plants, and the first solar thermal plant is to come online in 2009. Iran is the third country in the world to have developed GTL technology.
Document 7: Armenians: Historically, the name Armenian has come to internationally designate this group of people. It was first used by neighbouring countries of ancient Armenia. The earliest attestations of the exonym Armenia date around the 6th century BC. In his trilingual Behistun Inscription dated to 517 BC, Darius I the Great of Persia refers to Urashtu (in Babylonian) as Armina (in Old Persian; Armina (    ) and Harminuya (in Elamite). In Greek, Αρμένιοι "Armenians" is attested from about the same time, perhaps the earliest reference being a fragment attributed to Hecataeus of Miletus (476 BC). Xenophon, a Greek general serving in some of the Persian expeditions, describes many aspects of Armenian village life and hospitality in around 401 BC. He relates that the people spoke a language that to his ear sounded like the language of the Persians.
Document 8: Persians: The Persians are an Iranian ethnic group that make up over half the population of Iran. They share a common cultural system and are native speakers of the Persian language, as well as closely related languages.
Document 9: Iran: As with the spoken languages, the ethnic group composition also remains a point of debate, mainly regarding the largest and second largest ethnic groups, the Persians and Azerbaijanis, due to the lack of Iranian state censuses based on ethnicity. The CIA's World Factbook has estimated that around 79% of the population of Iran are a diverse Indo-European ethno-linguistic group that comprise the speakers of Iranian languages, with Persians constituting 53% of the population, Gilaks and Mazanderanis 7%, Kurds 10%, Lurs 6%, and Balochs 2%. Peoples of the other ethnicities in Iran make up the remaining 22%, with Azerbaijanis constituting 16%, Arabs 2%, Turkmens and Turkic tribes 2%, and others 2% (such as Armenians, Talysh, Georgians, Circassians, Assyrians).
Document 10: Orontid dynasty: These events are described in detail within the Behistun inscription. After the administrative reorganization of the Persian Empire, Armenia was converted into several satrapies. Armenian satraps regularly intermarried with the family of the King of Kings. These satraps provided contingents to Xerxes' invasion of Greece in 480 BC. Herodotus says that the Armenians in the army of Xerxes "were armed like the Phrygians."  In 401 BC Xenophon marched through Armenia with a large army of Greek mercenaries as part of the March of the Ten Thousand. Xenophon mentions two individuals by the name Orontes, apparently both Persian. One was a nobleman and military officer of high rank, belonging to the royal family; as the commander of the citadel of Sardis, he waged war against Cyrus the Younger and he tried to betray him to Artaxerxes II Memnon shortly before the battle of Cunaxa, but was taken prisoner and sentenced to death by a court martial. Xenophon's Anabasis has a detailed description of the country, where it is also written that the region near the river Centrites was defended by the satrap of Armenia for Artaxerxes II, named Orontes, son of Artasyras, who had Armenian contingents as well as Alarodians. Tiribaz is mentioned as hipparchos (vice-governor) of Armenia under Orontes, who later became satrap of Lydia.
Document 11: Iranian languages: The multitude of Middle Iranian languages and peoples indicate that great linguistic diversity must have existed among the ancient speakers of Iranian languages. Of that variety of languages/dialects, direct evidence of only two have survived. These are:
Document 12: Tobacco: Top tobacco producers, 2014 Country Production (tonnes) Note China 2,995,400 Brazil 862,396 India 720,725 United States 397,535 Indonesia 196,300 Pakistan 129,878 Malawi 126,348 Argentina 119,434 Zambia 112,049 Mozambique 97,075 World 5,755,140 No note = official figure, F = FAO Estimate, A = Aggregate (may include official, semiofficial or estimates).
Document 13: Pistachio: Top Pistachio Producers in 2014 Region Production (metric tonnes) Iran 415,531 United States 233,146 Turkey 80,000 China 76,943 World 857,878
Document 14: Armenia: The exonym Armenia is attested in the Old Persian Behistun Inscription (515 BC) as Armina (    ). The ancient Greek terms Ἀρμενία (Armenía) and Ἀρμένιοι (Arménioi, "Armenians") are first mentioned by Hecataeus of Miletus (c. 550 BC – c. 476 BC). Xenophon, a Greek general serving in some of the Persian expeditions, describes many aspects of Armenian village life and hospitality in around 401 BC. He relates that the people spoke a language that to his ear sounded like the language of the Persians. According to the histories of both Moses of Chorene and Michael Chamchian, Armenia derives from the name of Aram, a lineal descendant of Hayk.
Document 15: Armenians: The first geographical entity that was called Armenia by neighboring peoples (such as by Hecataeus of Miletus and on the Achaemenid Behistun Inscription) was established in the late 6th century BC under the Orontid dynasty within the Achaemenid Persian Empire as part of the latters' territories, and which later became a kingdom. At its zenith (95–65 BC), the state extended from the Caucasus all the way to what is now central Turkey, Lebanon, and northern Iran. The imperial reign of Tigranes the Great is thus the span of time during which Armenia itself conquered areas populated by other peoples.
ground_truth: 53%
sub_queries: who produces the most pistachios in the world Answer: Iran
What did Xenophon say Armenian language sounded like? Answer: Persians
Persians make up what percentage of #1 's population? Answer: 53%