| to find their food | 8 | purpose |
| to locate objects | 7 | purpose |
| to catch the moths | 5 | purpose |
| bat → use → sonar | 22 |
| bat → use → their sonar | 5 |
| bat → use → biological sonar | 4 |
| bat → use → its sonar | 3 |
| bat → rely on → sonar | 3 |
| negative | neutral | positive |
| 0.159 | 0.743 | 0.098 |
| Raw frequency | 37 |
| Normalized frequency | 0.498 |
| Modifier score | 0.600 |
| Perplexity | 200.475 |