Cars may undergo concentration.Logical formLearned from7 sentences. (Methane concentrations) may double.Logical formLearned from7 sentences. An atrium may offer concentration of a (material vocabulary).Logical formLearned from7 sentences. Concentration can be in manufacturing.Logical formLearned from7 sentences. A (material vocabulary) may undergo concentration.Logical formLearned from7 sentences. Concentration may pertain-to a US-president.Logical formLearned from7 sentences. Concentration may pertain-to someone.Logical formLearned from7 sentences. A female may be took to (concentration camp).Logical formLearned from7 sentences. A male may see as concentration of power.Logical formLearned from7 sentences. Concentration may reach a level.Logical formLearned from7 sentences. Respect can be to concentration of poverty.Logical formLearned from7 sentences. Races may undergo concentration.Logical formLearned from7 sentences. A skit may be set in a (concentration camp).Logical formLearned from7 sentences. Sound may undergo concentration.Logical formLearned from7 sentences. Youth may undergo concentrations.Logical formLearned from7 sentences.