| about the issues | 12 | other |
| with the robot's structure | 11 | other |
| with developing economical and safe solutions | 9 | other |
| engineer → be → concerned | 74 |
| engineer → be → worried | 10 |
| negative | neutral | positive |
| 0.217 | 0.619 | 0.164 |
| Raw frequency | 84 |
| Normalized frequency | 0.864 |
| Modifier score | 0.787 |
| Perplexity | 78.194 |