Subject	some metal
Predicate	be extracted
Object	by electrolysis
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9141
Neighborhood Sigma	0.9544
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source some metals are extracted by electrolysis 4 Google Autocomplete some metals have to be extracted by electrolysis 4 Google Autocomplete