Question: what is the westernmost point of the united states
[{'answer': 'Point Udall , Guam', 'provenance': [{'wikipedia_id': '635547', 'title': 'List of extreme points of the United States', 'start_paragraph_id': 70, 'start_character': 492, 'end_paragraph_id': 70, 'end_character': 510, 'bleu_score': 1.0, 'section': 'Section::::Interpretation of easternmost and westernmost.\n'}]}]