| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (SPONTANEOUS) | 1 |
100%
|
| 1 | A [COUNTRY] firm | 0 | |
| 2 | A [COUNTRY] research institute or university | 0 | |
| 3 | A foreign firm | 0 | |
| 4 | A foreign research institute or university | 0 | |
| 5 | Other | 0 |