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 | Visitor | Score | Home | Decision | Attendance | Record |
| --- | --- | --- | --- | --- | --- | --- |
| March 1 | Detroit | 2 – 0 | Anaheim | Osgood | 16606.0 | 40–14–5 |
| March 4 | Detroit | 7 – 3 | Phoenix | Legace | 18619.0 | 41–14–5 |
| March 7 | Phoenix | 5 – 2 | Detroit | Legace | 20066.0 | 41–15–5 |
| March 9 | Los Angeles | 3 – 7 | Detroit | Legace | 20066.0 | 42–15–5 |
| March 11 | Chicago | 4 – 6 | Detroit | Legace | 20066.0 | 43–15–5 |
| March 12 | Detroit | 5 – 3 | Chicago | Osgood | 19136.0 | 44–15–5 |
| March 15 | Anaheim | 1 – 3 | Detroit | Osgood | 20066.0 | 45–15–5 |
| March 18 | Detroit | 4 – 3 | Edmonton | Legace | 16839.0 | 46–15–5 |
| March 19 | Detroit | 7 – 3 | Vancouver | Osgood | 18630.0 | 47–15–5 |
| March 21 | Nashville | 3 – 2 | Detroit | Legace | 20066.0 | 47–15–6 |
| March 23 | San Jose | 0 – 4 | Detroit | Legace | 20066.0 | 48–15–6 |
| March 25 | Columbus | 5 – 4 | Detroit | Osgood | 20066.0 | 48–15–7 |
| March 27 | Detroit | 4 – 1 | St. Louis | Legace | 12834.0 | 49–15–7 |
| March 30 | Detroit | 4 – 2 | Nashville | Legace | 16570.0 | 50–15–7 |
| March 31 | Chicago | 3 – 2 | Detroit | Osgood | 20066.0 | 50–15–8 |
Question:
Who was the visitor on march 21?
Answer:
Nashville