Subject	concussion
Predicate	happen in
Object	football
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9312
Neighborhood Sigma	0.9446
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source concussions happen in football 2 Google Autocomplete a concussion happen in football 4 Google Autocomplete