Subject	drug
Predicate	affect
Object	nervous system
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9886
Neighborhood Sigma	0.9886
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source drugs affect the nervous system 16 Google Autocomplete, Yahoo Questions, Answers.com Questions drugs and alcohol affect the nervous system 2 Answers.com Questions