Concentrations of gas may raise fears of an explosion.Logical formLearned from6 sentences. A team may lose concentration.Logical formLearned from6 sentences. A (banking sector) may undergo concentration.Logical formLearned from6 sentences. Hundreds can be constituted-of-or-filled-with (concentration inmates).Logical formLearned from6 sentences. (Concentration inmates) can be with lethal injections.Logical formLearned from6 sentences. Concentration can be weak.Logical formLearned from6 sentences. Mines can be due to concentrations of (methane gas).Logical formLearned from6 sentences. Concentration can be in an industry.Logical formLearned from6 sentences. Concentration of (methane gas) may increase in a period.Logical formLearned from6 sentences. Concentration of persons can be tremendous.Logical formLearned from6 sentences. (Aerospace companies) may undergo concentration.Logical formLearned from6 sentences. A male may have a (blood alcohol concentration) of some percent.Logical formLearned from6 sentences. Establishments may undergo concentrations.Logical formLearned from6 sentences. A guard can be at a nazi (concentration camp).Logical formLearned from6 sentences. Concentrations of methane may make mines.Logical formLearned from6 sentences.