An improvement can be in concentration.Logical formLearned from5 sentences. A lapse can be in concentration.Logical formLearned from5 sentences. An island may host concentration of troops.Logical formLearned from5 sentences. A us-state may have concentration of immigrants.Logical formLearned from5 sentences. Concentration can be at times.Logical formLearned from5 sentences. Concentration may go to pieces.Logical formLearned from5 sentences. Images may undergo concentration.Logical formLearned from5 sentences. Problems may be associated with concentration of troops.Logical formLearned from5 sentences. Concentration may be helped.Logical formLearned from5 sentences. A female may keep concentration.Logical formLearned from5 sentences. A person may survive nazi (concentration camps).Logical formLearned from5 sentences. Some prisoners can be in a (concentration camp).Logical formLearned from5 sentences. Concentration can be in a (defense industry).Logical formLearned from5 sentences. A site may pertain-to a (nazi concentration camp).Logical formLearned from5 sentences. Ch4 may undergo concentration.Logical formLearned from4 sentences.