Question: where did the sf giants used to play
[{'answer': 'Candlestick Park', 'provenance': [{'wikipedia_id': '28416', 'title': 'San Francisco Giants', 'start_paragraph_id': 13, 'start_character': 337, 'end_paragraph_id': 13, 'end_character': 353, 'bleu_score': 1.0, 'section': 'Section::::Franchise history.:San Francisco Giants.\n'}]}]