| by rock island auction | 5 | location |
| with the machinegun receiver cut | 4 | other |
| on april | 4 | temporal |
| rifle → be → sold | 25 |
| rifle → be for → sale | 6 |
| rifle → be offered for → sale | 6 |
| rifle → come up for → sale | 5 |
| negative | neutral | positive |
| 0.207 | 0.715 | 0.078 |
| Raw frequency | 42 |
| Normalized frequency | 0.560 |
| Modifier score | 0.667 |
| Perplexity | 429.935 |