Question: how many 5 digit zip codes in the us
[{'answer': 'over 42,000', 'provenance': [{'wikipedia_id': '51550', 'title': 'ZIP Code', 'start_paragraph_id': 93, 'start_character': 13, 'end_paragraph_id': 93, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Other uses.:Statistics.\n'}]}, {'provenance': [{'wikipedia_id': '51550', 'title': 'ZIP Code', 'start_paragraph_id': 93, 'start_character': 0, 'end_paragraph_id': 93, 'end_character': 887, 'bleu_score': 0.9740239810936161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16682013194581019577}, 'section': 'Section::::Other uses.:Statistics.\n'}]}]