Question: how many series of judge john deed are there
[{'answer': '6', 'provenance': [{'wikipedia_id': '10874664', 'title': 'List of Judge John Deed episodes', 'start_paragraph_id': 1, 'start_character': 256, 'end_paragraph_id': 1, 'end_character': 257, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '10874664', 'title': 'List of Judge John Deed episodes', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 390, 'bleu_score': 0.9731482306711111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1221926651992310796}, 'section': 'Section::::Abstract.'}]}]