Trees may reduce (air pollution).Logical formLearned from3 sentences. A parameter may give a representation of an impact of effects of (ozone pollution).Logical formLearned from3 sentences. (Air pollution) can be moderate.Logical formLearned from3 sentences. (Health problems) may be associated with (air pollution).Logical formLearned from3 sentences. A (pollution control) can be municipal.Logical formLearned from3 sentences. Knowledge can be about pollution.Logical formLearned from3 sentences. (Water pollution) can be serious that something-is-the-case.Logical formLearned from3 sentences. Emissions may become a source of (air pollution).Logical formLearned from3 sentences. Measures can be for an abatement of pollution.Logical formLearned from3 sentences. Pollution may come from a country.Logical formLearned from3 sentences. (Air pollution) may undergo a start.Logical formLearned from3 sentences. Pollution may be destroyed.Logical formLearned from3 sentences. A program may reduce pollution.Logical formLearned from3 sentences. A (diesel pollution) can be harmful.Logical formLearned from3 sentences. (Pollution growth models) may be based on (population estimates).Logical formLearned from3 sentences.