Models may be classified in some types.Logical formLearned from2 sentences. Reserve may be classified as reserve.Logical formLearned from2 sentences. Some virus may be classified as rg-2.Logical formLearned from2 sentences. Agents may be classified into some (risk groups).Logical formLearned from2 sentences. Some groups may be classified by a nature of a condition.Logical formLearned from2 sentences. Subjects may be classified as nonsmokers.Logical formLearned from2 sentences. Some parents may be classified as ever-smokers.Logical formLearned from2 sentences. Marijuana may be classified in a category of controlled substances.Logical formLearned from2 sentences. A stimulus may be classified by an (information content).Logical formLearned from2 sentences. Phenethylamines may be classified as entactogens.Logical formLearned from2 sentences. Children may be classified as having levels of precursors.Logical formLearned from2 sentences. A law may classify a product.Logical formLearned from2 sentences. (Cocaine abusers) may be classified as (type b).Logical formLearned from2 sentences. Researcher may classify (study participants).Logical formLearned from2 sentences. A person may classify households.Logical formLearned from2 sentences.