Which country has the longest gap between successive titles at the Euros?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q183', 'id': 0, 'label': 'Germany'}, {'type': 'INTERNAL', 'name_': 'Q142', 'id': 1, 'label': 'France'}, {'type': 'INTERNAL', 'name_': 'Q189571', 'id': 2, 'label': 'UEFA Euro 2016'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q15275719', 'id': 3, 'label': 'recurring event'}, {'type': 'INTERNAL', 'name_': 'Q678413', 'id': 4, 'label': 'Deutscher Fernsehpreis'}, {'type': 'INTERNAL', 'name_': 'Q373501', 'id': 5, 'label': 'UEFA Euro 2020'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q260858', 'id': 6, 'label': 'UEFA European Championship'}, {'type': 'INTERNAL', 'name_': 'Q160145', 'id': 7, 'label': 'Earth Hour'}], 'links': [{'name_': 'P17', 'source': 0, 'target': 0, 'label': 'country'}, {'name_': 'P530', 'source': 0, 'target': 1, 'label': 'diplomatic relation'}, {'name_': 'P276', 'source': 2, 'target': 1, 'label': 'location'}, {'name_': 'P3450', 'source': 2, 'target': 6, 'label': 'sports season of league or competition'}, {'name_': 'P17', 'source': 4, 'target': 0, 'label': 'country'}, {'name_': 'P31', 'source': 4, 'target': 3, 'label': 'instance of'}, {'name_': 'P276', 'source': 5, 'target': 0, 'label': 'location'}, {'name_': 'P3450', 'source': 5, 'target': 6, 'label': 'sports season of league or competition'}, {'name_': 'P17', 'source': 7, 'target': 1, 'label': 'country'}, {'name_': 'P31', 'source': 7, 'target': 3, 'label': 'instance of'}]}