Question: who played general burkhalter on hogan's heroes
[{'answer': 'Leon Askin', 'provenance': [{'wikipedia_id': '393403', 'title': 'Leon Askin', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '393403', 'title': 'Leon Askin', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 203, 'bleu_score': 0.728547590184734, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5613202945039427666}, 'section': 'Section::::Abstract.'}]}]