Question: what prohibited further colonial settlement west of the appalachian mountains in 1763
[{'answer': 'The Royal Proclamation of 1763', 'provenance': [{'wikipedia_id': '132989', 'title': 'Royal Proclamation of 1763', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 30, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '132989', 'title': 'Royal Proclamation of 1763', 'start_paragraph_id': 1, 'start_character': 79, 'end_paragraph_id': 1, 'end_character': 484, 'bleu_score': 0.602576832403514, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5334599461442173763}, 'section': 'Section::::Abstract.'}]}]