Question: where are the four corners of the united states
[{'answer': 'southeastern corner of Utah', 'provenance': [{'wikipedia_id': '432420', 'title': 'Four Corners', 'start_paragraph_id': 1, 'start_character': 101, 'end_paragraph_id': 1, 'end_character': 128, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'northeastern corner of Arizona', 'provenance': [{'wikipedia_id': '432420', 'title': 'Four Corners', 'start_paragraph_id': 1, 'start_character': 130, 'end_paragraph_id': 1, 'end_character': 160, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'northwestern corner of New Mexico', 'provenance': [{'wikipedia_id': '432420', 'title': 'Four Corners', 'start_paragraph_id': 1, 'start_character': 166, 'end_paragraph_id': 1, 'end_character': 199, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'southwestern corner of Colorado', 'provenance': [{'wikipedia_id': '432420', 'title': 'Four Corners', 'start_paragraph_id': 1, 'start_character': 68, 'end_paragraph_id': 1, 'end_character': 99, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '432420', 'title': 'Four Corners', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1133, 'bleu_score': 0.9756844962711321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7692133218262179469}, 'section': 'Section::::Abstract.'}]}]