A world-city may retain some control.Logical formLearned from17 sentences. A person may retain positions.Logical formLearned from17 sentences. A person may retain a championship.Logical formLearned from17 sentences. An international-political-entity may retain the right.Logical formLearned from17 sentences. A person may retain a lead.Logical formLearned from17 sentences. A male may retain himself.Logical formLearned from17 sentences. Champion may retain a title.Logical formLearned from17 sentences. A side may retain a title.Logical formLearned from17 sentences. A male of a country may retain a title.Logical formLearned from17 sentences. A dollar may retain a tone.Logical formLearned from17 sentences. A female may retain a place.Logical formLearned from17 sentences. A country may retain a lead.Logical formLearned from17 sentences. A country may retain a role.Logical formLearned from17 sentences. A world-city may retain a system.Logical formLearned from16 sentences. A male may retain until a month.Logical formLearned from16 sentences.