Question: when was the last fifa world cup held
[{'answer': '2014', 'provenance': [{'wikipedia_id': '4743361', 'title': 'FIFA World Cup hosts', 'start_paragraph_id': 139, 'start_character': 202, 'end_paragraph_id': 139, 'end_character': 206, 'bleu_score': 1.0, 'section': 'Section::::2006 FIFA World Cup.:Controversy.\n'}]}]