| in the home | 6 | location |
| in ventilation | 5 | location |
| in heating | 5 | temporal |
| duct → carry → air | 8 |
| duct → transport → air | 8 |
| duct → move → air | 7 |
| duct → deliver → air | 6 |
| duct → carry → the air | 5 |
| duct → be used to deliver → air | 5 |
| negative | neutral | positive |
| 0.178 | 0.751 | 0.071 |
| Raw frequency | 39 |
| Normalized frequency | 0.485 |
| Modifier score | 0.600 |
| Perplexity | 231.515 |