| by peter knowles | 10 | other |
| in 1997 | 5 | temporal |
| for water sports | 5 | purpose |
| river → be → surveyed | 10 |
| river → be surveyed for → potential routes | 5 |
| negative | neutral | positive |
| 0.078 | 0.840 | 0.082 |
| Raw frequency | 15 |
| Normalized frequency | 0.279 |
| Modifier score | 1.000 |
| Perplexity | 338.457 |