An international-political-entity may hit some concentrations.Logical formLearned from20 sentences. Concentrations can be armored.Logical formLearned from20 sentences. Toxins may undergo concentrations.Logical formLearned from20 sentences. Concentration can be poor.Logical formLearned from20 sentences. Concentration may undergo a solution.Logical formLearned from19 sentences. (Oil refineries) may undergo concentration.Logical formLearned from19 sentences. Trees may undergo concentration.Logical formLearned from19 sentences. Artillery may undergo concentrations.Logical formLearned from19 sentences. Regions can be constituted-of-or-filled-with concentration.Logical formLearned from19 sentences. Art may undergo concentration.Logical formLearned from19 sentences. (Concentration camps) may undergo a use.Logical formLearned from19 sentences. Vapors may undergo concentrations.Logical formLearned from19 sentences. A decrease can be in concentrations.Logical formLearned from19 sentences. Concentration can be elective.Logical formLearned from19 sentences. Concentrations may undergo an inhalation.Logical formLearned from19 sentences.