| entirely | 3 | degree |
| mainly | 3 | degree |
| to ensure long life | 2 | purpose |
| structure → be made of → aluminium | 12 |
| structure → be in → aluminium | 3 |
| structure → consist of → aluminium | 3 |
| negative | neutral | positive |
| 0.091 | 0.622 | 0.288 |
| Raw frequency | 18 |
| Normalized frequency | 0.272 |
| Modifier score | 0.900 |
| Perplexity | 57.660 |