Question: who sings the song run to the hills
[{'answer': 'Iron Maiden', 'provenance': [{'wikipedia_id': '2899020', 'title': 'Run to the Hills', 'start_paragraph_id': 1, 'start_character': 61, 'end_paragraph_id': 1, 'end_character': 72, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2899020', 'title': 'Run to the Hills', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 500, 'bleu_score': 0.978375183951072, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15984038156213726933}, 'section': 'Section::::Abstract.'}]}]