Sivko-Burko () is a Russian fairy tale (skazka) collected by folklorist Alexandr Afanasyev in his three-volume compilation Russian Fairy Tales. The tale is a local form in Slavdom of tale type ATU 530, "The Princess on the Glass Mountain", wherein the hero has to jump higher and reach a tower or terem, instead of climbing up a steep and slippery mountain made entirely of glass.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).