Question: where did the first non aligned summit take place
[{'answer': 'Belgrade', 'provenance': [{'wikipedia_id': '36565', 'title': 'Non-Aligned Movement', 'start_paragraph_id': 2, 'start_character': 103, 'end_paragraph_id': 2, 'end_character': 111, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]