Question: who sings safe and sound with taylor swift
[{'answer': 'The Civil Wars', 'provenance': [{'wikipedia_id': '34164162', 'title': 'Safe & Sound (Taylor Swift song)', 'start_paragraph_id': 1, 'start_character': 96, 'end_paragraph_id': 1, 'end_character': 110, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '34164162', 'title': 'Safe & Sound (Taylor Swift song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 311, 'bleu_score': 0.708261065760273, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13714425259872530475}, 'section': 'Section::::Abstract.'}]}]