A male may serve as a colonel.Logical formLearned from87 sentences. A male may serve under a general.Logical formLearned from87 sentences. A station may be served by services.Logical formLearned from87 sentences. A person may serve as a volunteer.Logical formLearned from87 sentences. A purpose may be served.Logical formLearned from87 sentences. A male may serve as executive director.Logical formLearned from87 sentences. Pay may serve basis.Logical formLearned from87 sentences. A person may serve.Logical formLearned from87 sentences. A male may serve as vice-president.Logical formLearned from87 sentences. A male may serve as a prime minister.Logical formLearned from87 sentences. A male may serve as president of a college.Logical formLearned from87 sentences. Communities may be served.Logical formLearned from86 sentences. A highway may serve as an arterial route.Logical formLearned from86 sentences. A president may serve.Logical formLearned from86 sentences. A son may serve in a country.Logical formLearned from86 sentences.