Question: which agreement settled a boundary dispute between british canada and the united states
[{'answer': 'Hay - Herbert Treaty'}, {'provenance': [{'wikipedia_id': '558426', 'title': 'Alaska boundary dispute', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 655, 'bleu_score': 0.8720433147759821, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9494352753692174315}, 'section': 'Section::::Arbitration.\n'}]}]