Question: what is the capital of the nation that is completely surrounded by south africa
[{'answer': 'Maseru', 'provenance': [{'wikipedia_id': '17781', 'title': 'Lesotho', 'start_paragraph_id': 1, 'start_character': 377, 'end_paragraph_id': 1, 'end_character': 383, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]