Concentration may be kept constant.Logical formLearned from4 sentences. Capitals may undergo concentration.Logical formLearned from4 sentences. A beginning may pertain-to concentration.Logical formLearned from4 sentences. Concentration can be variable.Logical formLearned from4 sentences. Norepinephrine may undergo concentrations.Logical formLearned from4 sentences. Buffer may undergo concentration.Logical formLearned from4 sentences. Concentrations may be monitored.Logical formLearned from4 sentences. A female can be (concentration camp guard).Logical formLearned from4 sentences. Ethane may undergo concentration.Logical formLearned from4 sentences. Reports can be constituted-of-or-filled-with concentrations.Logical formLearned from4 sentences. Concentration of persons may mean that something-is-the-case.Logical formLearned from4 sentences. Acetone may undergo concentrations.Logical formLearned from4 sentences. Sedimentary rocks can be with concentration of sulfur.Logical formLearned from4 sentences. Concentration of spherules may produce a blueberry.Logical formLearned from4 sentences. A mother may be sent to (concentration camp).Logical formLearned from4 sentences.