How many wars did Rome fight against Carthage?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q220', 'id': 0, 'label': 'Rome'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q6286', 'id': 1, 'label': 'First Punic War'}, {'type': 'INTERNAL', 'name_': 'Q17167', 'id': 2, 'label': 'Roman Republic'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q6343', 'id': 3, 'label': 'Carthage'}, {'type': 'INTERNAL', 'name_': 'Q356605', 'id': 4, 'label': 'Ad Herbal'}], 'links': [{'name_': 'P710', 'source': 1, 'target': 2, 'label': 'participant'}, {'name_': 'P36', 'source': 2, 'target': 0, 'label': 'capital'}, {'name_': 'P607', 'source': 4, 'target': 1, 'label': 'conflict'}, {'name_': 'P27', 'source': 4, 'target': 3, 'label': 'country of citizenship'}]}