Question: who is the inventor of the tesla coil
[{'answer': 'Tesla', 'provenance': [{'wikipedia_id': '21473', 'title': 'Nikola Tesla', 'start_paragraph_id': 0, 'start_character': 7, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '21473', 'title': 'Nikola Tesla', 'start_paragraph_id': 39, 'start_character': 0, 'end_paragraph_id': 39, 'end_character': 857, 'bleu_score': 0.9613050207098811, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16845788392409812954}, 'section': 'Section::::New York laboratories.:Tesla coil.\n'}]}]