Question: where does the president's helicopter land at the white house
[{'answer': 'The south lawn', 'provenance': [{'wikipedia_id': '15728461', 'title': 'South Lawn (White House)', 'start_paragraph_id': 24, 'start_character': 0, 'end_paragraph_id': 24, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Amenities.:Helicopter landing area.\n'}]}, {'provenance': [{'wikipedia_id': '15728461', 'title': 'South Lawn (White House)', 'start_paragraph_id': 24, 'start_character': 0, 'end_paragraph_id': 24, 'end_character': 379, 'bleu_score': 0.9262685672663881, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11773473189736393253}, 'section': 'Section::::Amenities.:Helicopter landing area.\n'}]}]