Subject	historian
Predicate	use
Object	source
Modality	Modality Occurrences TBC[primary sources] 5 TBC[secondary sources] 3 TBC[primary secondary sources] 1 TBC[primary source] 1
Polarity	POSITIVE
Plausibility	0.9941
Neighborhood Sigma	0.9951
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source historians use sources 8 Google Autocomplete, Bing Autocomplete, Answers.com Questions historians use primary sources 3 Google Autocomplete, Bing Autocomplete historians use secondary sources 3 Google Autocomplete, Bing Autocomplete historians use primary secondary sources 1 Google Autocomplete historians use primary and secondary source 1 Google Autocomplete historians use primary and secondary sources 2 Google Autocomplete, Answers.com Questions