(Manufacturing activity) may undergo concentration.Logical formLearned from6 sentences. Inhabitants may undergo concentration.Logical formLearned from6 sentences. Increases can be in (ozone concentrations).Logical formLearned from6 sentences. Concentration can be in accounting.Logical formLearned from6 sentences. Interests may undergo concentration.Logical formLearned from6 sentences. (Vinyl chloride) may undergo concentrations.Logical formLearned from6 sentences. Concentrations may suggest that something-is-the-case.Logical formLearned from6 sentences. Areas may undergo concentration.Logical formLearned from6 sentences. Concentration can be in food.Logical formLearned from6 sentences. Nanograms may undergo concentration.Logical formLearned from6 sentences. A comparison may pertain-to concentrations.Logical formLearned from6 sentences. Concentration can be in communications.Logical formLearned from6 sentences. An impact may pertain-to concentration.Logical formLearned from6 sentences. Parties can be to concentration.Logical formLearned from6 sentences. Concentration may raise (competition concerns).Logical formLearned from6 sentences.