Which of the following entity extraction techniques would be best for the extraction of telephone numbers from a text document?

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Which of the following entity extraction techniques would be best for the extraction of telephone numbers from a text document?
A . complex pattern-based
B . regex
C . statistical
D . dictionary

Answer: C

Explanation:

Reference: https://www.researchgate.net/publication/318093829_Developing_an_innovative_entity_extraction_method_for_unstructured_data