Question: who makes the engine for the smart car
[{'answer': 'Mitsubishi', 'provenance': [{'wikipedia_id': '4350617', 'title': 'Smart Fortwo', 'start_paragraph_id': 44, 'start_character': 14, 'end_paragraph_id': 44, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Second generation (Build series W451, 2007–2014).:Engine and fuel economy.\n'}]}, {'answer': 'Mercedes', 'provenance': [{'wikipedia_id': '4350617', 'title': 'Smart Fortwo', 'start_paragraph_id': 3, 'start_character': 98, 'end_paragraph_id': 3, 'end_character': 106, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'German tuner company Brabus , in a joint venture with Smart'}, {'provenance': [{'wikipedia_id': '4350617', 'title': 'Smart Fortwo', 'start_paragraph_id': 44, 'start_character': 0, 'end_paragraph_id': 44, 'end_character': 423, 'bleu_score': 0.7799942863040561, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14354992241581252024}, 'section': 'Section::::Second generation (Build series W451, 2007–2014).:Engine and fuel economy.\n'}]}]