(Greenhouse gases) may undergo concentration.Logical formLearned from278 sentences. Resources may undergo concentration.Logical formLearned from278 sentences. A person may lose concentration.Logical formLearned from270 sentences. Concentrations can be airborne.Logical formLearned from265 sentences. Concentration may undergo a loss.Logical formLearned from262 sentences. Chemicals may undergo concentrations.Logical formLearned from258 sentences. Concentration can be strong.Logical formLearned from258 sentences. Contaminants may undergo concentrations.Logical formLearned from256 sentences. A trend can be toward concentration of power.Logical formLearned from252 sentences. Concentrations can be high.Logical formLearned from248 sentences. A (concentration camp) can be notorious.Logical formLearned from248 sentences. Population may undergo concentration.Logical formLearned from239 sentences. A (concentration camp) may pertain-to a country.Logical formLearned from237 sentences. Lead may undergo concentrations.Logical formLearned from231 sentences. Concentration may pertain-to a nation.Logical formLearned from231 sentences.