Question: who sang the song blanket on the ground
[{'answer': 'Billie Jo Spears', 'provenance': [{'wikipedia_id': '15454133', 'title': 'Blanket on the Ground', 'start_paragraph_id': 1, 'start_character': 67, 'end_paragraph_id': 1, 'end_character': 83, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '15454133', 'title': 'Blanket on the Ground', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 269, 'bleu_score': 0.9603762111511761, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14553944056931170806}, 'section': 'Section::::Abstract.'}]}]