Question: where are spark plugs located in a car
[{'answer': "the engine 's cylinder head", 'provenance': [{'wikipedia_id': '144209', 'title': 'Spark plug', 'start_paragraph_id': 1, 'start_character': 638, 'end_paragraph_id': 1, 'end_character': 668, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '144209', 'title': 'Spark plug', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1014, 'bleu_score': 0.9758296989642081, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4831752728205323813}, 'section': 'Section::::Abstract.'}]}]