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:
| Date announced | Plant name | Location | Date of closing | Products | Employees |
| --- | --- | --- | --- | --- | --- |
| January 23, 2006 | St. Louis Assembly | Hazelwood, Missouri | 2006 | Ford Explorer\nLincoln Aviator\nMercury Mountaineer | 1,445 |
| January 23, 2006 | Atlanta Assembly | Hapeville, Georgia | Oct. 2006 | Ford Taurus\nMercury Sable | 2,028 |
| January 23, 2006 | Batavia Transmission | Batavia, Ohio | 2008 | transmissions | 1,745 |
| January 23, 2006 | Windsor Casting | Windsor, Ontario, Canada | 2008 | Engine blocks, parts | 684 |
| January 23, 2006 | Wixom Assembly | Wixom, Michigan | June 2007 | Lincoln Town Car\nLincoln LS\nFord GT | 1,567 |
| April 13, 2006 | Twin Cities Assembly | St. Paul, Minnesota, USA | 2011 | Ford Ranger\nMazda B-Series | 1,885 |
| April 13, 2006 | Norfolk Assembly | Norfolk, Virginia, USA | 2007 | Ford F-Series | 2,433 |
| September 14, 2006 | Essex Engine | Windsor, Ontario, Canada | 2008 | Ford Triton engine\nFord Essex V6 engine |  |
| September 14, 2006 | Maumee Stamping | Maumee, Ohio | 2008 | body panels |  |
| Total | Total | Total | Total | Total | 11,787 |
Question:
how many plants manufacture items for ford?
Answer:
6