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In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.

Oktoberfest (] ) is the world's largest Volksfest (beer festival and travelling funfair). Held annually in Munich, Bavaria, Germany, it is a 16- to 18-day folk festival running from mid or late September to the first weekend in October, with more than 6 million people from around the world attending the event every year. Locally, it is often called the Wiesn, after the colloquial name for the fairgrounds, Theresa's meadows ("Theresienwiese"). The Oktoberfest is an important part of Bavarian culture, having been held since the year 1810. Other cities across the world also hold Oktoberfest celebrations that are modelled after the original Munich event. Question: The Rotor is an amusement park ride that first demonstrated during a festival held in what city? Answer: Munich
Output:
Held annually in Munich, Bavaria, Germany, it is a 16 to 18day folk festival running from mid or late September to the first weekend in October, with more than 6 million people from around the world attending the event every year.