Table:
text: De Graafschap
Results
Results
Season League Rank_ Games Points GF GA Manager Top_Scorer Goals
2006-07 Eerste divisie 1 38 83 88 41 Jan de Jonge Berry Powel 29
2007-08 Eredivisie 16 34 30 33 64 Jan de Jonge Donny de Groot 8
2008-09 Eredivisie 17 34 30 24 58 Henk van Stee / Darije Kalezić Jason Oost / Ben Sahar 5
2009-10 Eerste divisie 1 38 81 85 34 Darije Kalezić Hugo Bargas 16

Question: How many seasons did De Graafschap have a rank of 16?

Question: Who is the rank 16 manager at De Graafschap?