| to maintain irs | 5 | purpose |
| out of other duties | 3 | other |
| always | 2 | temporal |
| librarian → take → time | 8 |
| librarian → need → time | 3 |
| negative | neutral | positive |
| 0.153 | 0.399 | 0.448 |
| Raw frequency | 11 |
| Normalized frequency | 0.365 |
| Modifier score | 0.833 |
| Perplexity | 191.296 |