Subject	labor union
Predicate	be formed
Object	in the late 1800
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.7450
Neighborhood Sigma	0.7556
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source labor unions were formed in the late 1800s 1 Answers.com Questions