| in the mid-20th century | 5 | temporal |
| in oceans | 5 | location |
| in modern life | 4 | location |
| plastic → be → prevalent | 12 |
| plastic → be → widespread | 9 |
| plastic → become → widespread | 5 |
| negative | neutral | positive |
| 0.549 | 0.348 | 0.103 |
| Raw frequency | 26 |
| Normalized frequency | 0.387 |
| Modifier score | 0.500 |
| Perplexity | 182.928 |