| in residential and commercial plumbing works | 43 | location |
| in this field | 7 | location |
| in handling tasks | 6 | other |
| plumber → have → expertise | 87 |
| plumber → have → the expertise | 35 |
| plumber → have → necessary skills | 25 |
| plumber → have → specialized knowledge | 3 |
| plumber → have → necessary expertise | 3 |
| negative | neutral | positive |
| 0.076 | 0.497 | 0.427 |
| Raw frequency | 153 |
| Normalized frequency | 0.653 |
| Modifier score | 1.000 |
| Perplexity | 193.209 |