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 | Bowl Game | Big Ten Team | Opp. Team | Score |
| --- | --- | --- | --- | --- |
| Dec. 26, 2007 | Motor City Bowl | Purdue | Central Michigan | 51-48 |
| Dec. 28, 2007 | Champs Sports Bowl | Michigan State | Boston College | 24-21 |
| Dec. 29, 2007 | Alamo Bowl | Penn State | Texas A&M | 24-17 |
| Dec. 31, 2007 | Insight Bowl | Indiana | Oklahoma State | 49-33 |
| Jan. 1, 2008 | Outback Bowl | Wisconsin | Tennessee | 21-17 |
| Jan. 1, 2008 | Capital One Bowl | Michigan | Florida | 41-35 |
| Jan. 1, 2008 | Rose Bowl | Illinois | USC | 49-17 |
| Jan. 7, 2008 | BCS National Championship | Ohio State | LSU | 38-24 |
Question:
Who was Purdue's opponent?
Answer:
Central Michigan