Subject ozone hole
Predicate occur
Object while human-made gases are produced in the northern hemisphere
Modality
Modality Occurrences
Polarity POSITIVE
Plausibility 0.5005
Neighborhood Sigma 0.5007
Local Sigma 1.0000
Example Sentences
Sentence Occurrences Source
ozone hole occur over antarctica while human-made gases are produced in the northern hemisphere 1 Yahoo Questions