Question: how many episodes in season 6 father brown
[{'answer': '10', 'provenance': [{'wikipedia_id': '36623250', 'title': 'Father Brown (2013 TV series)', 'start_paragraph_id': 52, 'start_character': 345, 'end_paragraph_id': 52, 'end_character': 347, 'bleu_score': 1.0, 'section': 'Section::::Production.:Filming.\n'}]}]