(Revenue sources) may undergo maintenance.Logical formLearned from18 sentences. Revenues can be persons.Logical formLearned from18 sentences. Revenues can be small.Logical formLearned from18 sentences. Control can be over revenues.Logical formLearned from18 sentences. Revenues can be on target.Logical formLearned from18 sentences. (Oil revenues) may pertain-to a government.Logical formLearned from18 sentences. Revenues can be required.Logical formLearned from18 sentences. Revenues may pertain-to a corporation.Logical formLearned from18 sentences. Revenue may be reduced.Logical formLearned from18 sentences. Revenue can be allowable.Logical formLearned from18 sentences. Revenues can be high.Logical formLearned from18 sentences. (Revenue growth) can be over some years.Logical formLearned from18 sentences. A business may lose revenue.Logical formLearned from18 sentences. (State revenue) may undergo a distribution.Logical formLearned from18 sentences. (Revenue streams) can be predictable.Logical formLearned from18 sentences.