| Typicality: | 0.312 |
| Saliency: | 0.350 |
| because of the efficiency | 8 | cause |
| across the united states | 6 | location |
| rapidly | 3 | manner |
| heat pump → gain → popularity | 9 |
| heat pump → grow in → popularity | 6 |
| heat pump → gain in → popularity | 3 |
| negative | neutral | positive |
| 0.059 | 0.215 | 0.726 |
| Raw frequency | 18 |
| Normalized frequency | 0.350 |
| Modifier score | 0.500 |
| Perplexity | 163.973 |