Subject	alkali metal
Predicate	be found as
Object	pure elements
Modality	Modality Occurrences rarely 4
Polarity	POSITIVE
Plausibility	0.7294
Neighborhood Sigma	0.7369
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source alkali metals are rarely found as pure elements 4 Google Autocomplete, Answers.com Questions