Question: what is the oldest canal in the uk
[{'answer': 'Newry Canal in Northern Ireland', 'provenance': [{'wikipedia_id': '192713', 'title': 'History of the British canal system', 'start_paragraph_id': 25, 'start_character': 161, 'end_paragraph_id': 25, 'end_character': 192, 'bleu_score': 1.0, 'section': 'Section::::The Industrial Revolution.\n'}]}, {'provenance': [{'wikipedia_id': '192713', 'title': 'History of the British canal system', 'start_paragraph_id': 25, 'start_character': 0, 'end_paragraph_id': 25, 'end_character': 229, 'bleu_score': 0.948006874591591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15396553082411346944}, 'section': 'Section::::The Industrial Revolution.\n'}]}]