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 "Simon Ammann"): Additionally he won the 2007 Ski Jumping World Championships; the 2010 Ski Flying World Championships; the 2010 Nordic Tournament; and the 2010 Ski Jumping World Cup.
Relevant evidence: No