| to the central nervous system | 13 | transitive-object |
| on the brain | 8 | location |
| for all the controversy | 5 | other |
| caffeine → be → stimulant | 194 |
| caffeine → act as → stimulant | 26 |
| caffeine → be → mild stimulant | 14 |
| caffeine → be → powerful stimulant | 9 |
| caffeine → have → stimulant effect | 6 |
| caffeine → be → strong stimulant | 5 |
| caffeine → act as → mild stimulant | 4 |
| caffeine → serve as → stimulant | 4 |
| negative | neutral | positive |
| 0.280 | 0.481 | 0.239 |
| Raw frequency | 262 |
| Normalized frequency | 1.000 |
| Modifier score | 0.500 |
| Perplexity | 9.167 |