Question: who played robin on the 1960s batman tv series
[{'answer': 'Burt Ward', 'provenance': [{'wikipedia_id': '643207', 'title': 'Burt Ward', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 9, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '643207', 'title': 'Burt Ward', 'start_paragraph_id': 1, 'start_character': 37, 'end_paragraph_id': 1, 'end_character': 433, 'bleu_score': 0.609668779797865, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4044846672604539936}, 'section': 'Section::::Abstract.'}]}]