Subject	purine
Predicate	be linked
Object	in a double helix
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.6710
Neighborhood Sigma	0.9111
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source purines and pyrimidines are linked in a double helix 2 Google Autocomplete