Question: when did brazil organize its first world cup
[{'answer': '1950', 'provenance': [{'wikipedia_id': '4743361', 'title': 'FIFA World Cup hosts', 'start_paragraph_id': 4, 'start_character': 121, 'end_paragraph_id': 4, 'end_character': 125, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]