A risk can be constituted-of-or-filled-with (air pollution).Logical formLearned from5 sentences. An indicator can be constituted-of-or-filled-with (water pollution).Logical formLearned from5 sentences. Technologies can be for (pollution prevention).Logical formLearned from5 sentences. Pollution can be from coal-fired plants.Logical formLearned from5 sentences. Pollution can be a contamination of air.Logical formLearned from5 sentences. (Pollution problems) can be localized.Logical formLearned from5 sentences. Problems can be due to pollution.Logical formLearned from5 sentences. Measures may reduce pollution.Logical formLearned from5 sentences. Concern can be over (water pollution).Logical formLearned from5 sentences. An information can be on variety of (pollution issues).Logical formLearned from5 sentences. Persons can be concerned about pollution.Logical formLearned from5 sentences. Threats may be posed by pollution.Logical formLearned from5 sentences. (Air pollution regulations) can be strict.Logical formLearned from5 sentences. An offering of spoils can be pollution.Logical formLearned from5 sentences. Air can be thick with pollution.Logical formLearned from5 sentences.