Subject	enslaved african
Predicate	be main workforce in
Object	southern colonies
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.0003
Neighborhood Sigma	0.9650
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source enslaved africans were the main workforce in the southern colonies 1 Answers.com Questions