Hierarchies can be ordered.Logical formLearned from8 sentences. A hierarchy can be constituted-of-or-filled-with headings.Logical formLearned from8 sentences. A hierarchy can be theoretical.Logical formLearned from8 sentences. Classifications may be grouped into a hierarchy of classes.Logical formLearned from8 sentences. A hierarchy may develop.Logical formLearned from8 sentences. A (hierarchy rule) may require that something-is-the-case.Logical formLearned from8 sentences. A relationship can be with a hierarchy.Logical formLearned from8 sentences. A hierarchy can be constituted-of-or-filled-with causes.Logical formLearned from8 sentences. Levels may pertain-to a social hierarchy.Logical formLearned from8 sentences. A hierarchy can be constituted-of-or-filled-with sorts.Logical formLearned from8 sentences. An organization may pertain-to a hierarchy.Logical formLearned from8 sentences. A hierarchy can be dynamic.Logical formLearned from8 sentences. Persons may create a hierarchy.Logical formLearned from8 sentences. Hierarchies can be dynamic.Logical formLearned from8 sentences. A hierarchy can be constituted-of-or-filled-with abstractions.Logical formLearned from8 sentences.