A system may comprise signals.Logical formLearned from2 sentences. Blacks may be comprised over one-quarter of a population.Logical formLearned from2 sentences. A riding may be comprised.Logical formLearned from2 sentences. A line may comprise some stations.Logical formLearned from2 sentences. A district may comprise portions of counties.Logical formLearned from2 sentences. Some themes may comprise a gallery.Logical formLearned from2 sentences. A paper may be comprised.Logical formLearned from2 sentences. A turnout may be comprised.Logical formLearned from2 sentences. A (forestry industry) may comprise lumber.Logical formLearned from2 sentences. An episode may be comprised.Logical formLearned from2 sentences. A guard may comprise some men.Logical formLearned from2 sentences. Continent may comprise a percentage of estimates.Logical formLearned from2 sentences. Contents may comprise quartz.Logical formLearned from2 sentences. A revolution may be comprised.Logical formLearned from2 sentences. Education may comprise learning of periods.Logical formLearned from2 sentences.