sentence1: coreference resolution is a central problem in natural language processing with a broad range of applications such as summarization ( cite-p-16-3-24 ) , textual entailment ( cite-p-16-3-12 ) , information extraction ( cite-p-16-3-11 ) , and dialogue systems ( cite-p-16-3-25 ) .
sentence2: coreference resolution is a fundamental component of natural language processing ( nlp ) and has been widely applied in other nlp tasks ( cite-p-15-3-9 ) .