| preferably | 6 | degree |
| membrane → be made of → material | 15 |
| membrane → be made of → other material | 4 |
| membrane → be made from → single material | 4 |
| membrane → be made from → multiple materials | 4 |
| membrane → be made from → various materials | 4 |
| negative | neutral | positive |
| 0.054 | 0.827 | 0.119 |
| Raw frequency | 31 |
| Normalized frequency | 0.442 |
| Modifier score | 0.900 |
| Perplexity | 73.753 |