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psychoactive drug (subgroup of drug) → IsA → chemical substance	0.68
psychoactive drug (subgroup of drug) → CapableOf → affect the brain	0.65
marijuana → IsA → psychoactive drug	0.58
psychoactive drug (subgroup of drug) → CapableOf → affect central nervous system	0.49
psychoactive drug (subgroup of drug) → CapableOf → impair judgment	0.48
caffeine → IsA → psychoactive drug	0.47
psychoactive drug (subgroup of drug) → CapableOf → alter perception	0.39
psychoactive drug (subgroup of drug) → ReceivesAction → used to treat a range of conditions	0.34
psychoactive drug (subgroup of drug) → ReceivesAction → introduced	0.34
psychoactive drug (subgroup of drug) → HasProperty → useless	0.26
psychoactive drug (subgroup of drug) → HasProperty → dangerous	0.26
psychoactive drug (subgroup of drug) → ReceivesAction → prescribed for a cocktail of diagnoses	0.26
psychoactive drug (subgroup of drug) → CapableOf → account for most of the drugs	0.25
psychoactive drug (subgroup of drug) → CapableOf → alter mood	0.16
psychoactive drug (subgroup of drug) → HasProperty → addictive	0.16