Question: what method of execution is used in most states
[{'answer': 'lethal injection', 'provenance': [{'wikipedia_id': '412425', 'title': 'Capital punishment in the United States', 'start_paragraph_id': 2, 'start_character': 78, 'end_paragraph_id': 2, 'end_character': 94, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '412425', 'title': 'Capital punishment in the United States', 'start_paragraph_id': 35, 'start_character': 0, 'end_paragraph_id': 35, 'end_character': 887, 'bleu_score': 0.835067948455908, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14364536944669094804}, 'section': 'Section::::History.:Lethal injection era.\n'}]}]