Question: What American football coach coached was the defensive coordinator for the Philadelphia Eagles and began his first year with the Detroit Lions in 2009?
Sentence (from "2009 Detroit Lions season"): "Pro Football Reference" has argued that, owing to a weaker programme featuring the NFC West and AFC North vis-à-vis their 2008 schedule against surprisingly strong NFC South and AFC South divisions, the 2009 Lions were actually a weaker team than the 0–16 2008 Lions.
Relevant evidence: No