Question: what is the area code for phoenix arizona
[{'answer': '602', 'provenance': [{'wikipedia_id': '15308299', 'title': 'List of Arizona area codes', 'start_paragraph_id': 2, 'start_character': 12, 'end_paragraph_id': 2, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '480', 'provenance': [{'wikipedia_id': '15308299', 'title': 'List of Arizona area codes', 'start_paragraph_id': 4, 'start_character': 12, 'end_paragraph_id': 4, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '623', 'provenance': [{'wikipedia_id': '15308299', 'title': 'List of Arizona area codes', 'start_paragraph_id': 5, 'start_character': 12, 'end_paragraph_id': 5, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '15308299', 'title': 'List of Arizona area codes', 'section': 'Section::::Abstract.', 'start_paragraph_id': 5, 'end_paragraph_id': 5, 'meta': {'evidence_span': ['623 - Maricopa County, west of the Phoenix city limits and some western parts of the city. Includes the cities of Glendale, Goodyear, Avondale, Tolleson, Buckeye, Sun City, Litchfield Park, Surprise and Peoria.', '623 - Maricopa County, west of the Phoenix city limits and some western parts of the city. Includes the cities of Glendale, Goodyear, Avondale, Tolleson, Buckeye, Sun City, Litchfield Park, Surprise and Peoria.', '623 - Maricopa County, west of the Phoenix city limits and some western parts of the city.']}}]}, {'provenance': [{'wikipedia_id': '2908048', 'title': 'Area code 623', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['North American area code 623 is a state of Arizona telephone area code serving most of the western portion of the Phoenix metropolitan area. It was created in a split from area code 602 on April 1, 1999, when it was evident that the Valley of the Sun was expanding too rapidly to remain in one area code. Generally, the West Valley and the outer northwestern suburbs became 623, the eastern suburbs and the Phoenix neighborhood of Ahwatukee became area code 480, and inner Phoenix remained in 602.', 'North American area code 623 is a state of Arizona telephone area code serving most of the western portion of the Phoenix metropolitan area. It was created in a split from area code 602 on April 1, 1999, when it was evident that the Valley of the Sun was expanding too rapidly to remain in one area code. Generally, the West Valley and the outer northwestern suburbs became 623, the eastern suburbs and the Phoenix neighborhood of Ahwatukee became area code 480, and inner Phoenix remained in 602.', 'North American area code 623 is a state of Arizona telephone area code serving most of the western portion of the Phoenix metropolitan area. It was created in a split from area code 602 on April 1, 1999, when it was evident that the Valley of the Sun was expanding too rapidly to remain in one area code. Generally, the West Valley and the outer northwestern suburbs became 623, the eastern suburbs and the Phoenix neighborhood of Ahwatukee became area code 480, and inner Phoenix remained in 602.']}}]}, {'provenance': [{'wikipedia_id': '4041792', 'title': 'Area code 520', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ["It was created in a split from area code 602 on March 19, 1995. Previously, 602 had been the sole area code for the entire state of Arizona since the introduction of area codes in 1947. With Arizona's rapid expansion during the second half of the 20th century, it was taken for granted that the state would require a second area code. However, the split was hastened by the proliferation of cell phones and pagers.\rhighlight sentence(s) containing evidence, not only the answer", 'North American area code 520 is a state of Arizona telephone area code serving Tucson and most of the southeastern part of the state. It was created in a split from area code 602 on March 19, 1995. Previously, 602 had been the sole area code for the entire state of Arizona since the introduction of area codes in 1947.', 'It was created in a split from area code 602 on March 19, 1995. Previously, 602 had been the sole area code for the entire state of Arizona since the introduction of area codes in 1947.']}}]}]