Subject	crop
Predicate	purify
Object	water
Modality	Modality Occurrences some[subj/planting] 1
Polarity	POSITIVE
Plausibility	0.9163
Neighborhood Sigma	0.9371
Local Sigma	0.9317
Example Sentences	Sentence Occurrences Source crops purify water 4 Google Autocomplete planting crops purify water 1 Google Autocomplete