Question: how many seasons and episodes of downton abbey
[{'answer': 'Six series', 'provenance': [{'wikipedia_id': '32581419', 'title': 'List of Downton Abbey episodes', 'start_paragraph_id': 1, 'start_character': 303, 'end_paragraph_id': 1, 'end_character': 313, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '52 episodes', 'provenance': [{'wikipedia_id': '32581419', 'title': 'List of Downton Abbey episodes', 'start_paragraph_id': 1, 'start_character': 611, 'end_paragraph_id': 1, 'end_character': 622, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '32581419', 'title': 'List of Downton Abbey episodes', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 663, 'bleu_score': 0.9625181433061291, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5142037405199491349}, 'section': 'Section::::Abstract.'}]}]