Concentration may pertain-to a market.Logical formLearned from7 sentences. An elected-representative may have concentration of (teaching hospitals).Logical formLearned from7 sentences. Concentrations may drop.Logical formLearned from7 sentences. Plankton may undergo concentrations.Logical formLearned from7 sentences. Drugs may increase concentration.Logical formLearned from7 sentences. Concentration may be inhaled.Logical formLearned from7 sentences. Concentration of dioxin can be pcb.Logical formLearned from7 sentences. A shadow may pertain-to a (concentration camp).Logical formLearned from7 sentences. (Concentration camps) may undergo a running.Logical formLearned from7 sentences. Moments can be constituted-of-or-filled-with concentration.Logical formLearned from7 sentences. Cfcs may undergo concentration.Logical formLearned from7 sentences. Increases can be in concentration.Logical formLearned from7 sentences. Students may develop concentration.Logical formLearned from7 sentences. Poison may undergo concentration.Logical formLearned from7 sentences. A (mass concentration) can be dark.Logical formLearned from7 sentences.