A phenomenon may undergo importance.Logical formLearned from47 sentences. A name can be for a phenomenon.Logical formLearned from47 sentences. A person may study a phenomenon.Logical formLearned from47 sentences. A phenomenon can be recurrent.Logical formLearned from47 sentences. A phenomenon can be criminal.Logical formLearned from46 sentences. A phenomenon can be age-old.Logical formLearned from46 sentences. A phenomenon can be daily.Logical formLearned from45 sentences. A phenomenon can be serious.Logical formLearned from45 sentences. A phenomenon may be knowned.Logical formLearned from45 sentences. A rise can be a phenomenon.Logical formLearned from45 sentences. A phenomenon can be suburban.Logical formLearned from45 sentences. A term can be for a phenomenon.Logical formLearned from45 sentences. A phenomenon can be amorphous.Logical formLearned from44 sentences. A phenomenon can be popular.Logical formLearned from44 sentences. A phenomenon may pertain-to a world-city.Logical formLearned from44 sentences.