Question: who sang sha na na na live for today
[{'answer': 'The Grass Roots', 'provenance': [{'wikipedia_id': '27202839', 'title': "Let's Live for Today (song)", 'start_paragraph_id': 2, 'start_character': 113, 'end_paragraph_id': 2, 'end_character': 128, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27202839', 'title': "Let's Live for Today (song)", 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 552, 'bleu_score': 0.660242989501414, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9629092645974174561}, 'section': 'Section::::Abstract.'}]}]