Question: What linguistic grouping is the old version of the language in which Entekhab is published, a part of?

full_context: Document 1: List of newspapers in Bahrain: Bahrain's Information Affairs Authority reported that the number of newspapers in 1999 was four which were published in Arabic and English languages. There were a total of 12 dailies and weeklies in the country in 2012.
Document 2: Iranian languages: Old Persian is the Old Iranian dialect as it was spoken in south-western Iran by the inhabitants of Parsa, who also gave their name to their region and language. Genuine Old Persian is best attested in one of the three languages of the Behistun inscription, composed circa 520 BC, and which is the last inscription (and only inscription of significant length) in which Old Persian is still grammatically correct. Later inscriptions are comparatively brief, and typically simply copies of words and phrases from earlier ones, often with grammatical errors, which suggests that by the 4th century BC the transition from Old Persian to Middle Persian was already far advanced, but efforts were still being made to retain an "old" quality for official proclamations.
Document 3: Iranian languages: Two of the earliest dialectal divisions among Iranian indeed happen to not follow the later division into Western and Eastern blocks. These concern the fate of the Proto-Indo-Iranian first-series palatal consonants, *ć and *dź:
Document 4: Iranian languages: It is possible that other distinct dialect groups were already in existence during this period. Good candidates are the hypothethical ancestor languages of Alanian/Scytho-Sarmatian subgroup of Scythian in the far northwest; and the hypothetical "Old Parthian" (the Old Iranian ancestor of Parthian) in the near northwest, where original *dw > *b (paralleling the development of *ćw).
Document 5: Iranian languages: In addition to Old Persian and Avestan, which are the only directly attested Old Iranian languages, all Middle Iranian languages must have had a predecessor "Old Iranian" form of that language, and thus can all be said to have had an (at least hypothetical) "Old" form. Such hypothetical Old Iranian languages include Carduchi (the hypothetical predecessor to Kurdish) and Old Parthian. Additionally, the existence of unattested languages can sometimes be inferred from the impact they had on neighbouring languages. Such transfer is known to have occurred for Old Persian, which has (what is called) a "Median" substrate in some of its vocabulary. Also, foreign references to languages can also provide a hint to the existence of otherwise unattested languages, for example through toponyms/ethnonyms or in the recording of vocabulary, as Herodotus did for what he called "Scythian".
Document 6: 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 7: Iran: In 1935, Reza Shah requested the international community to refer to the country by its native name, Iran. As the New York Times explained at the time, "At the suggestion of the Persian Legation in Berlin, the Tehran government, on the Persian New Year, Nowruz, March 21, 1935, substituted Iran for Persia as the official name of the country." Opposition to the name change led to the reversal of the decision, and Professor Ehsan Yarshater, editor of Encyclopædia Iranica, propagated a move to use Persia and Iran interchangeably. Today, both Persia and Iran are used in cultural contexts; although, Iran is the name used officially in political contexts.
Document 8: Western Iranian languages: The Western Iranian languages are a branch of the Iranian languages, attested from the time of Old Persian (6th century BC) and Median.
Document 9: Entekhab: Entekhab (Persian: انتخاب "Choice" in English) was a Persian language newspaper published in Iran between 1991 and 2004. Nevertheless, its news website is active under the name of "Entekhab Professional News Site" (Entekhab.ir), only working in Persian language.
Document 10: Iranshenasi: Iran Shenasi also spelled as "Iranshinasi" () is an academic journal of Iranian studies. The founding editor-in-chief is Jalal Matini. The journal is published in Persian (with English abstracts) and covers Iranian history, Persian culture, and Persian literature. The majority of research libraries in the world that have a Middle Eastern or Iranian studies program are subscribers and it is considered as one of the most authoritative journals on the culture of Iran and Persian literature.
Document 11: Ayandegan: Ayandegan ( lit. "The Future People") was one of the most influential and popular daily newspapers in Iran during Mohammad Reza Pahlavi's rule. The paper was founded in 1967 by Daryoush Homayoun. From its start in 1967 to 1977 he also edited the paper, which held a liberal stance. The paper had its headquarters in Tehran. Following the 1979 revolution, on 8 August 1979, the revolutionary prosecutor banned the newspaper.
Document 12: Rīgas Balss: Rīgas Balss () was a tabloid newspaper published in Riga, Latvia, published in Latvian and Russian languages. The Russian edition has turned into "Vechernyaya Riga" in 2001 and ceased publication in 2004. Latvian edition has turned into journal in 2008 and ceased publication in 2009.
Document 13: Irana Esperantisto: Irana Esperantisto ("Iranian Esperantist") is an independent quarterly culture magazine, which is published in Esperanto and in Persian in Tehran and distributed internationally. Its Persian title is "Payame Sabz-andishan" (literally: Message of the Green-Thinkers or the Green-Adepts). About half of the content of each edition is in Esperanto and the other half in Persian.
Document 14: Iranian languages: What is known in Iranian linguistic history as the "Middle Iranian" era is thought to begin around the 4th century BCE lasting through the 9th century. Linguistically the Middle Iranian languages are conventionally classified into two main groups, Western and Eastern.
Document 15: Iranian languages: The other directly attested Old Iranian dialects are the two forms of Avestan, which take their name from their use in the Avesta, the liturgical texts of indigenous Iranian religion that now goes by the name of Zoroastrianism but in the Avesta itself is simply known as vohu daena (later: behdin). The language of the Avesta is subdivided into two dialects, conventionally known as "Old (or 'Gathic') Avestan", and "Younger Avestan". These terms, which date to the 19th century, are slightly misleading since 'Younger Avestan' is not only much younger than 'Old Avestan', but also from a different geographic region. The Old Avestan dialect is very archaic, and at roughly the same stage of development as Rigvedic Sanskrit. On the other hand, Younger Avestan is at about the same linguistic stage as Old Persian, but by virtue of its use as a sacred language retained its "old" characteristics long after the Old Iranian languages had yielded to their Middle Iranian stage. Unlike Old Persian, which has Middle Persian as its known successor, Avestan has no clearly identifiable Middle Iranian stage (the effect of Middle Iranian is indistinguishable from effects due to other causes).
ground_truth: Iranian languages
sub_queries: What language is Entekhab in? Answer: Persian
Old Persian >> part of Answer: Iranian languages