Subject	copper sulfate
Predicate	be described
Object	as a catalyst
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.7835
Neighborhood Sigma	0.7952
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source copper sulfate is described as a catalyst 2 Google Autocomplete copper sulfate is described as a catalyst and not a reactant 2 Google Autocomplete