Subject vein
Predicate need
Object valves
Modality
Modality Occurrences
Polarity POSITIVE
Plausibility 0.7160
Neighborhood Sigma 0.7161
Local Sigma 0.7323
Example Sentences
Sentence Occurrences Source
veins need valves 4 Google Autocomplete, Answers.com Questions
veins need valves but not arteries 1 Google Autocomplete
veins need valves but arteries do not 1 Google Autocomplete
veins need valves and arteries do not 1 Google Autocomplete