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AI-generated from the Wikipedia summary — may contain errors.
The year 557 BC was a year of the pre-Julian Roman calendar. In the Roman Empire, it was known as year 197 Ab urbe condita. The denomination 557 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).