to revitalize the language, mainly in Hokkaidō, but also elsewhere such as Kanto. Ainu oral literature has been documented both in hopes of safeguarding it for future generations, as well as using it as a teaching tool for language learners. As of 2011 there has been an increasing number of second-language learners, especially in Hokkaidō, in large part due to the pioneering efforts of the late Ainu folklorist, activist and former Diet member Shigeru Kayano, himself a native speaker, who first opened an Ainu language school in 1987 funded by Ainu Kyokai. Although some researchers have attempted to show that the Ainu language and the Japanese language are related, modern scholars have rejected the idea that the relationship goes beyond contact (such as the mutual borrowing of words between Japanese and Ainu). No attempt to show a relationship with Ainu to any other language has gained wide acceptance, and linguists currently classify Ainu as a language isolate. Most Ainu people speak either the Japanese language or the Russian language. Concepts expressed with prepositions (such as to, from, by, in, and at) in English appear as postpositional forms in Ainu (postpositions come after the word that they modify). A single sentence in Ainu can comprise many added or agglutinated sounds or affixes that represent nouns or ideas. The Ainu language has had no indigenous system of writing, and has historically been transliterated using the Japanese kana or Russian Cyrillic. it is typically written either in katakana or in the Latin alphabet. Many of the Ainu dialects, even those from different extremities of Hokkaidō, were not mutually intelligible; however, all Ainu speakers understood the classic Ainu language of the Yukar, or epic stories. Without a writing system, the Ainu were masters of narration, with the Yukar and other forms of narration such as the Uepeker (Uwepeker) tales being committed to memory and related at gatherings which often lasted many hours or even days. Culture Traditional Ainu culture was quite different from Japanese culture. According to Tanaka Sakurako from the University of British Columbia, the Ainu culture can be included into a wider "northern circumpacific region", referring to various indigenous cultures of Northeast Asia and "beyond the Bering Strait" in North America. Never shaving after a certain age, the men had full beards and moustaches. Men and women alike cut their hair level with the shoulders at the sides of the head, trimmed