Question: who sang let the sunshine in on the flintstones
[{'answer': 'Pebbles', 'provenance': [{'wikipedia_id': '5409689', 'title': 'Open Up Your Heart (And Let the Sunshine In)', 'start_paragraph_id': 8, 'start_character': 93, 'end_paragraph_id': 8, 'end_character': 100, 'bleu_score': 1.0, 'section': 'Section::::Covers.\n'}]}, {'answer': 'Bamm - Bamm'}, {'provenance': [{'wikipedia_id': '5409689', 'title': 'Open Up Your Heart (And Let the Sunshine In)', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 908, 'bleu_score': 0.9640848954757241, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8000802333842705413}, 'section': 'Section::::Covers.\n'}]}]