Question: Book of Souls World Tour is by whom?
Sentence (from "2009 ATP World Tour"): The 2009 ATP World Tour calendar comprises the Grand Slam tournaments (supervised by the International Tennis Federation (ITF)), the ATP World Tour Masters 1000, the ATP World Tour 500 series, the ATP World Tour 250 series, the ATP World Team Championship, the Davis Cup (organized by the ITF), and the ATP World Tour Finals.
Relevant evidence: No