Subject	carbon
Predicate	have
Object	four valence electrons
Modality	Modality Occurrences only 2
Polarity	POSITIVE
Plausibility	0.8023
Neighborhood Sigma	0.8023
Local Sigma	0.8644
Example Sentences	Sentence Occurrences Source carbon have four valence electrons 2 Google Autocomplete carbon only have four valence electrons 2 Answers.com Questions