Subject	primary source
Predicate	be important to
Object	historians
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.8103
Neighborhood Sigma	0.8523
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source primary sources are important to historians 6 Google Autocomplete primary sources are so important to historians 1 Google Autocomplete