Subject	necessity
Predicate	be for
Object	older adults
Modality	Modality Occurrences some[subj/physical activity] 1
Polarity	POSITIVE
Plausibility	0.3110
Neighborhood Sigma	0.3931
Local Sigma	0.3361
Example Sentences	Sentence Occurrences Source physical activity a necessity is for older adults 2 Google Autocomplete