Question: when was the city of san diego founded
[{'answer': '1769', 'provenance': [{'wikipedia_id': '28504', 'title': 'San Diego', 'start_paragraph_id': 3, 'start_character': 416, 'end_paragraph_id': 3, 'end_character': 420, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '28504', 'title': 'San Diego', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 752, 'bleu_score': 0.957408925615394, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4740087853612444043}, 'section': 'Section::::Abstract.'}]}]