A brown coal can be dirty.Logical formLearned from3 sentences. A (power station) can be dirty.Logical formLearned from3 sentences. Colours can be dirty.Logical formLearned from3 sentences. Some hands can be dirty.Logical formLearned from3 sentences. A (guerrilla sympathizer) can be during a dirty war.Logical formLearned from3 sentences. Dirty water may offer a (breeding ground).Logical formLearned from3 sentences. A social cost may pertain-to a dirty war.Logical formLearned from3 sentences. Currencies can be dirty.Logical formLearned from3 sentences. Bodies can be dirty.Logical formLearned from3 sentences. A dirty laundry may pertain-to a resort.Logical formLearned from3 sentences. Real estate may be deemed dirty.Logical formLearned from3 sentences. A dirty war can be against political dissent.Logical formLearned from3 sentences. Dirty tricks can be by politicians.Logical formLearned from3 sentences. A (slander trial) may involve dirty tricks.Logical formLearned from3 sentences. (Dollar bills) can be dirty.Logical formLearned from3 sentences.