What great ancient city is now a suburb of Tunis?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q3572', 'id': 0, 'label': 'Tunis'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q6343', 'id': 1, 'label': 'Carthage'}, {'type': 'INTERNAL', 'name_': 'Q3298917', 'id': 2, 'label': 'Mathieu de Lesseps'}], 'links': [{'name_': 'P119', 'source': 2, 'target': 0, 'label': 'place of burial'}, {'name_': 'P119', 'source': 2, 'target': 1, 'label': 'place of burial'}]}