Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Season | Champion | Constructor | Teams' Champion | Secondary Class | Nations Cup | Winter Series Champion |
| --- | --- | --- | --- | --- | --- | --- |
| 1976 | David Kennedy | Van Diemen | Not Held | Not Held | Not Held | Not Held |
| 1977 | Trevor van Rooyen | Royale | Not Held | Not Held | Not Held | Not Held |
| 1978 | Kenneth Acheson | Royale | Not Held | Not Held | Not Held | Not Held |
| 1979 | David Sears | Royale | Not Held | Not Held | Not Held | Not Held |
| 1980 | Tommy Byrne | Van Diemen | Not Held | Not Held | Not Held | Not Held |
| 1981 | Ayrton Senna | Van Diemen | Not Held | Not Held | Not Held | Not Held |
| 1982 | Mauricio Gugelmin | Van Diemen | Not Held | Not Held | Not Held | Not Held |
| 1983 | Andrew Gilbert-Scott | Van Diemen | Not Held | Not Held | Not Held | Not Held |
| 1984 | Dave Coyne | Van Diemen | Not Held | Not Held | Not Held | Not Held |
| 1985 | Bertrand Gachot | Van Diemen | Not Held | Not Held | Not Held | Not Held |
| 1986 | Jason Eliott | Van Diemen | Not Held | Not Held | Not Held | Not Held |
| 1987 | Eddie Irvine | Van Diemen | Not Held | Not Held | Not Held | Not Held |
| 1988 | Derek Higgins | Van Diemen | Not Held | Not Held | Not Held | Not Held |
| 1989 | Bernard Dolan | Reynard | Not Held | Not Held | Not Held | Not Held |
| 1990 | Michael Vergers | Van Diemen | Not Held | Not Held | Not Held | Not Held |
| 1991 | Marc Goossens | Van Diemen | Not Held | Not Held | Not Held | Not Held |
| 1992 | Jamie Spence | Swift | Not Held | Not Held | Not Held | Winter Series Champion |
| 1993 | Russell Ingall | Van Diemen | Not Held | Not Held | Not Held | Martin Byford |
| 1994 | Jason Watt | Vector | Not Held | Not Held | Not Held | Narain Karthikeyan |
| 1995 | Bas Leinders | Swift | Not Held | Not Held | Not Held | Vitor Meira |
| 1996 | Kristian Kolby | Van Diemen | Not Held | Not Held | Not Held | Ricardo Sperafico |
| 1997 | Jacky van der Ende | Van Diemen | Not Held | Not Held | Not Held | Mark Taylor |
| 1998 | Jenson Button | Mygale | Not Held | Not Held | Not Held | Ricardo van der Ende |
| 1999 | Nicolas Kiesa | Mygale | Not Held | Not Held | Not Held | Anthony Davidson |
| 2000 | Robert Dahlgren | Van Diemen | Not Held | Not Held | Not Held | Adam Carroll |
| 2001 | James Courtney | Van Diemen | Not Held | Not Held | Not Held | Joey Foster |
| 2002 | Westley Barber | Van Diemen | Not Held | Not Held | Not Held | Alx Danielsson |
| 2003 | Tom Kimber-Smith | Van Diemen | Not Held | Not Held | Not Held | Sebastian Hohenthal |
| 2004 | Valle Mäkelä | Van Diemen | Not Held | Not Held | Not Held | Robert Sunderland |
| 2005 | Charlie Donnelly | Mygale | Not Held | Not Held | Not Held | Andrew Bentley |
| 2006 | Nathan Freke | Mygale | Not Held | Not Held | Not Held | David Mayes |
| Season | Champion | Constructor | Teams' Champion | Scholarship Class | Nations Cup | Winter Series Champion |
| 2007 | Callum MacLeod | Mygale | Not Held | Matt Dobson | Not Held | Not Held |
| 2008 | Wayne Boyd | Mygale | Not Held | Chrissy Palmer | Not Held | Not Held |
| 2009 | James Cole | Mygale | Not Held | Daniel Cammish | Not Held | Not Held |
| 2010 | Scott Pye | Mygale | Jamun Racing | Tristan Mingay | Australia | Not Held |
| 2011 | Scott Malvern | Mygale | Jamun Racing | Cavan Corcoran | Australia | Not Held |
| Season | Champion | Constructor | Teams' Champion | Duratec Champion | Nations Cup | Winter Series Champion |
| 2012 | Antti Buri | Mygale | JTR | Matt Rao | Finland | Not Held |
| 2013 | Dan Cammish | Mygale | TBA | TBA | TBA | Not Held |
Question:
What secondary class of Winter Series champion Andrew Bentley?
Answer:
Not Held