Question: how many lamborghini sesto elemento's are in the world
[{'answer': '20', 'provenance': [{'wikipedia_id': '28998120', 'title': 'Lamborghini Sesto Elemento', 'start_paragraph_id': 2, 'start_character': 107, 'end_paragraph_id': 2, 'end_character': 109, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]