Question: where was the first cell phone call made
[{'answer': 'April 3 , 1973', 'provenance': [{'wikipedia_id': '1245539', 'title': 'History of mobile phones', 'start_paragraph_id': 44, 'start_character': 162, 'end_paragraph_id': 44, 'end_character': 176, 'bleu_score': 1.0, 'section': 'Section::::Handheld mobile phone.\n'}]}, {'provenance': [{'wikipedia_id': '1245539', 'title': 'History of mobile phones', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5665080289799140639}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1245539', 'title': 'History of mobile phones', 'start_paragraph_id': 44, 'start_character': 0, 'end_paragraph_id': 44, 'end_character': 507, 'bleu_score': 0.8049160564261061, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5665080289799140639}, 'section': 'Section::::Handheld mobile phone.\n'}]}, {'provenance': [{'wikipedia_id': '1245539', 'title': 'History of mobile phones', 'section': 'Section::::Handheld mobile phone.\n', 'start_paragraph_id': 44, 'end_paragraph_id': 44, 'meta': {'evidence_span': ['On April 3, 1973, Martin Cooper, a Motorola researcher and executive, made the first mobile telephone call from handheld subscriber equipment, placing a call to Dr. Joel S. Engel of Bell Labs, his rival.', 'On April 3, 1973,', 'On April 3, 1973, Martin Cooper, a Motorola researcher and executive, made the first mobile telephone call from handheld subscriber equipment, placing a call to Dr. Joel S. Engel of Bell Labs, his rival.']}}]}]