Question: How long is the Munich Germany festival where Hofbräu-Festzelt is one of the largest beer tents?
Sentence (from "Oktoberfest"): 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.
Relevant evidence: Yes