Question: Who was the father of the manager during the 2013–14 Feyenoord season?
Sentence (from "Ronald Koeman"): Regarded as one of the best and most prolific attacking central defenders of all time, Koeman was renowned for his long-range passing, as well as his shooting accuracy and power from distance, especially on free kicks, and is the top scoring defender in world football; he was also an accurate penalty kick taker.
Relevant evidence: No