Subject	historian
Predicate	use
Object	secondary source
Modality	Modality Occurrences TBC[primary secondary sources] 1
Polarity	POSITIVE
Plausibility	0.9571
Neighborhood Sigma	0.9581
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source historians use secondary sources 6 Google Autocomplete, Bing Autocomplete historians use primary and secondary source 1 Google Autocomplete historians use primary and secondary sources 2 Google Autocomplete, Answers.com Questions historians use primary secondary sources 1 Google Autocomplete