Laboratories may undergo concentration.Logical formLearned from7 sentences. Prisoners can be in a (concentration camp).Logical formLearned from7 sentences. (Poultry farms) may undergo concentration.Logical formLearned from7 sentences. Concentration may start.Logical formLearned from7 sentences. Players may keep concentration.Logical formLearned from7 sentences. A team may undergo concentration.Logical formLearned from7 sentences. Concentration can be from a defense.Logical formLearned from7 sentences. Troops may spot concentration of firepower.Logical formLearned from7 sentences. A (gas concentration) can be high.Logical formLearned from7 sentences. A militia may undergo concentrations.Logical formLearned from7 sentences. A (concentration camp) can be for (asylum seekers).Logical formLearned from7 sentences. Victims may pertain-to a (concentration camp).Logical formLearned from7 sentences. Nightclubs may undergo concentration.Logical formLearned from7 sentences. Human activities may increase concentrations of (greenhouse gases).Logical formLearned from7 sentences. Areas can be with concentrations of voters.Logical formLearned from7 sentences.