Question: who sang the song be thankful for what you got
[{'answer': 'William DeVaughn', 'provenance': [{'wikipedia_id': '14253747', 'title': 'Be Thankful for What You Got', 'start_paragraph_id': 1, 'start_character': 77, 'end_paragraph_id': 1, 'end_character': 93, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14253747', 'title': 'Be Thankful for What You Got', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 93, 'bleu_score': 0.8852140475440831, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17058200700223988843}, 'section': 'Section::::Abstract.'}]}]