Question: who played grandpa joe in charlie and the chocolate factory
[{'answer': 'David Kelly', 'provenance': [{'wikipedia_id': '30456888', 'title': 'List of Charlie and the Chocolate Factory characters', 'start_paragraph_id': 13, 'start_character': 28, 'end_paragraph_id': 13, 'end_character': 39, 'bleu_score': 1.0, 'section': 'Section::::Grandpa Joe.\n'}]}, {'provenance': [{'wikipedia_id': '30456888', 'title': 'List of Charlie and the Chocolate Factory characters', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 695, 'bleu_score': 0.983672097934538, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10885328706958159339}, 'section': 'Section::::Grandpa Joe.\n'}]}]