Question: what side of a powered aircraft has green navigation lights
[{'answer': 'the right wingtip leading edge', 'provenance': [{'wikipedia_id': '729308', 'title': 'Navigation light', 'start_paragraph_id': 17, 'start_character': 172, 'end_paragraph_id': 17, 'end_character': 202, 'bleu_score': 1.0, 'section': 'Section::::Aviation navigation lights.\n'}]}, {'provenance': [{'wikipedia_id': '729308', 'title': 'Navigation light', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 645, 'bleu_score': 0.9601968849001611, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9102415527473570609}, 'section': 'Section::::Aviation navigation lights.\n'}]}]