Question: who sings the song one day at a time
[{'answer': 'Marilyn Sellars', 'provenance': [{'wikipedia_id': '14872835', 'title': 'One Day at a Time (song)', 'start_paragraph_id': 2, 'start_character': 11, 'end_paragraph_id': 2, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14872835', 'title': 'One Day at a Time (song)', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 242, 'bleu_score': 0.955027111100031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4371583528338277827}, 'section': 'Section::::Marilyn Sellars version.\n'}]}]