| for 5.1 hours | 7 | temporal |
| as a flying research laboratory | 3 | other |
| by several countries | 2 | other |
| airplane → be → operated | 24 |
| airplane → be in → operation | 4 |
| airplane → be in → use | 3 |
| negative | neutral | positive |
| 0.217 | 0.669 | 0.114 |
| Raw frequency | 31 |
| Normalized frequency | 0.479 |
| Modifier score | 0.000 |
| Perplexity | 336.455 |