| in glass manufacturing throughout history | 4 | temporal |
| for years | 4 | temporal |
| supposedly | 2 | degree |
| glass → be → developed | 20 |
| glass → be in → development | 8 |
| glass → be used as → development | 4 |
| glass → be under → development | 3 |
| negative | neutral | positive |
| 0.112 | 0.626 | 0.262 |
| Raw frequency | 35 |
| Normalized frequency | 0.388 |
| Modifier score | 1.000 |
| Perplexity | 455.068 |