Question: who sang the song it's a heartache
[{'answer': 'Bonnie Tyler', 'provenance': [{'wikipedia_id': '4690504', 'title': "It's a Heartache", 'start_paragraph_id': 1, 'start_character': 54, 'end_paragraph_id': 1, 'end_character': 66, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Juice Newton', 'provenance': [{'wikipedia_id': '4690504', 'title': "It's a Heartache", 'start_paragraph_id': 1, 'start_character': 162, 'end_paragraph_id': 1, 'end_character': 174, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4690504', 'title': "It's a Heartache", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 305, 'bleu_score': 0.8960307811743391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 424323142677627628}, 'section': 'Section::::Abstract.'}]}]