Question: The language used by Roshd Biological Education was part of what languages in 6th century BC?

full_context: Document 1: 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 2: EMBO Reports: EMBO Reports is a peer-reviewed scientific journal covering research related to biology at a molecular level. It publishes primary research papers, reviews, and essays and opinion. It also features commentaries on the social impact of advances in the life sciences and the converse influence of society on science. A sister journal to "The EMBO Journal", "EMBO Reports" was established in 2000 and was published on behalf of the European Molecular Biology Organization by Nature Publishing Group since 2003. It is now published by "EMBO Press", which also publishes "The EMBO Journal" and "Molecular Systems Biology".
Document 3: BioEssays: The journal was established in December 1984 by founding editor-in-chief William J. Whelan under the auspices of the International Union of Biochemistry and Molecular Biology. Adam S. Wilkins became editor in January 1990. Originally published by ICSU Press and The Company of Biologists, "BioEssays" has been published by John Wiley & Sons since January 1998. Andrew Moore became editor-in-chief in August 2008.
Document 4: Origins of Life and Evolution of Biospheres: Origins of Life and Evolution of Biospheres is a peer-reviewed scientific journal established in 1968 covering astrobiology and origins of life research. It is the official journal of the International Society for the Study of the Origin of Life. The journal's scope includes research on the origin, evolution, distribution, and future of life on Earth and beyond. Some examples of areas of interest are: prebiotic chemistry and the nature of Earth's early environment, self-replicating and self-organizing systems, the RNA world hypothesis and of other possible precursor systems, and the problem of the origin of the genetic code. According to the "Journal Citation Reports", the journal has a 2016 impact factor of 1.000.Due to recent progress in paleontological studies it has been possible to increase the age of the earliest organisms from an estimated 2.0–3.0 billion years to 3.5–3.8 billion years.
Document 5: 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 6: 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 7: 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 8: 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 9: 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 10: 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 11: Roshd Biological Education: Roshd Biological Education is a quarterly science educational magazine covering recent developments in biology and biology education for a biology teacher Persian -speaking audience. Founded in 1985, it is published by The Teaching Aids Publication Bureau, Organization for Educational Planning and Research, Ministry of Education, Iran. Roshd Biological Education has an editorial board composed of Iranian biologists, experts in biology education, science journalists and biology teachers.
Document 12: 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).
Document 13: 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 14: Scientia Iranica: Scientia Iranica is a peer-reviewed scientific journal published by Sharif University of Technology (Tehran, Iran). It was established in 1991 and covers theoretical and experimental research in technical sciences and engineering. Starting in 2011, the journal is published open access. The editor-in-chief is Abolhassan Vafai (Sharif University of Technology).
Document 15: Open Biology: Open Biology is a peer-reviewed open access scientific journal published by the Royal Society covering biology at the molecular and cellular levels. The first issue was published in September 2011 with an editorial about the launch of the journal. All papers are made freely available under an open access model immediately on publication. The editor-in-chief is David Glover (University of Cambridge).
ground_truth: Iranian languages
sub_queries: In what language is Roshd Biological Education? Answer: Persian
Old Persian >> part of Answer: Iranian languages