Question: who sings the country song time marches on
[{'answer': 'Tracy Lawrence', 'provenance': [{'wikipedia_id': '19499155', 'title': 'Time Marches On (song)', 'start_paragraph_id': 1, 'start_character': 101, 'end_paragraph_id': 1, 'end_character': 115, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19499155', 'title': 'Time Marches On (song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 559, 'bleu_score': 0.955468993395951, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6313063602784615682}, 'section': 'Section::::Abstract.'}]}]