Question: who sang the song if you're going to san francisco
[{'answer': 'Scott McKenzie', 'provenance': [{'wikipedia_id': '7921420', 'title': 'San Francisco (Be Sure to Wear Flowers in Your Hair)', 'start_paragraph_id': 1, 'start_character': 120, 'end_paragraph_id': 1, 'end_character': 134, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7921420', 'title': 'San Francisco (Be Sure to Wear Flowers in Your Hair)', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 499, 'bleu_score': 0.5336963081149171, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13421376392890139671}, 'section': 'Section::::Abstract.'}]}]