Question: the north american country that is farthest north
[{'answer': 'Greenland', 'provenance': [{'wikipedia_id': '873541', 'title': 'Extreme points of North America', 'start_paragraph_id': 3, 'start_character': 54, 'end_paragraph_id': 3, 'end_character': 63, 'bleu_score': 1.0, 'section': 'Section::::North America and surrounding islands.\n'}]}]