Subject	feedback
Predicate	has_property
Object	necessary
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.7862
Neighborhood Sigma	0.8546
Local Sigma	0.7862
Example Sentences	Sentence Occurrences Source feedback is necessary 4 Google Autocomplete, Answers.com Questions feedback is necessary in communication 2 Google Autocomplete, Answers.com Questions feedback is necessary in software development 1 Google Autocomplete feedback is necessary in communication process 1 Google Autocomplete