Question: The 2006–07 Four Hills Tournament was a series of ski jumping competitions held in the traditional venues of Oberstdorf, Garmisch-Partenkirchen, Innsbruck and Bischofshofen, located in Germany and Austria, before the tournament started on which date, the World Cup leader was Simon Ammann, a Swiss ski jumper?
Sentence (from "2007–08 Four Hills Tournament"): The competition at Innsbruck was cancelled due to adverse weather conditions and replaced by an additional visit to Bischofshofen.
Relevant evidence: No