Question: who sang if i could see the rhondda one more time
[{'answer': 'David Alexander', 'provenance': [{'wikipedia_id': '3189962', 'title': 'David Alexander (singer)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3189962', 'title': 'David Alexander (singer)', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 1184, 'bleu_score': 0.9713755002779041, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 356368963355254176}, 'section': 'Section::::Career.\n'}]}]