Concentration may be needed.Logical formLearned from7 sentences. A person may survive a nazi (concentration camp).Logical formLearned from7 sentences. A person may lose a bit concentration.Logical formLearned from7 sentences. Kenyans may undergo concentration.Logical formLearned from7 sentences. Survivors may undergo concentration.Logical formLearned from7 sentences. Concentrations may rise at a rate.Logical formLearned from7 sentences. Survivors may pertain-to a (concentration camp).Logical formLearned from7 sentences. (Police officers) may undergo concentration.Logical formLearned from7 sentences. A US-president may visit a site of a german (concentration camp).Logical formLearned from7 sentences. Values may undergo concentration.Logical formLearned from7 sentences. Concentrations may produce (kidney stones).Logical formLearned from7 sentences. Some reference can be to (concentration camps).Logical formLearned from7 sentences. Data can be on concentrations.Logical formLearned from7 sentences. Concentration may pertain-to a composer.Logical formLearned from7 sentences. Persons may die in (concentration camps).Logical formLearned from7 sentences.