Hospitals may undergo concentration.Logical formLearned from18 sentences. An uncle may liberate (concentration camp-not).Logical formLearned from18 sentences. Persons can be with (arsenic concentrations).Logical formLearned from18 sentences. Investments may undergo concentration.Logical formLearned from18 sentences. An army may undergo concentration.Logical formLearned from18 sentences. Others may help states with concentrations of students.Logical formLearned from18 sentences. A picture may show concentration.Logical formLearned from18 sentences. Arab-Americans may undergo concentration.Logical formLearned from18 sentences. Fossils may undergo concentration.Logical formLearned from18 sentences. A ppb may undergo concentrations.Logical formLearned from18 sentences. Concentrations may pertain-to a female.Logical formLearned from18 sentences. A male may have concentration.Logical formLearned from18 sentences. Growth may undergo concentration.Logical formLearned from18 sentences. Manufacturing may undergo concentration.Logical formLearned from18 sentences. Concentrations can be in a range.Logical formLearned from18 sentences.