| Typicality: | 0.468 |
| Saliency: | 0.512 |
| nationally | 8 | location |
| space heater → be certified by → recognized testing laboratory | 8 |
| space heater → be certified by → nationally-recognized testing laboratory | 3 |
| negative | neutral | positive |
| 0.057 | 0.733 | 0.210 |
| Raw frequency | 11 |
| Normalized frequency | 0.512 |
| Modifier score | 0.500 |
| Perplexity | 33.608 |