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 | Label | Region | Format | Catalog |
| --- | --- | --- | --- | --- |
| March 1992 | PCD | Canada | CD single - Promo | 162 |
| March 1992 | Polydor | France, Belgium | CD single - Promo | 4230 |
| March 1992 | Polydor | France, Belgium | 12" maxi - Promo | — |
| 13 April 1992 | Polydor | France, Belgium | 7" single | 865 820-7 |
| 13 April 1992 | Polydor | France, Belgium | CD single | 865 820-2 |
| 13 April 1992 | Polydor | France, Belgium | 7" maxi | 865 821-1 |
| 13 April 1992 | Polydor | France, Belgium | CD maxi | 865 821-2 |
| 13 April 1992 | Polydor | France, Belgium | Cassette | 865 820-4 |
| May 1992 | Polydor | Germany | 7" single | 865 820-7 |
| May 1992 | Polydor | Germany | CD maxi | 865 821-2 |
Question:
what is the format of catalog 865 821-1?
Answer:
7" maxi