A hierarchy can be adaptive.Logical formLearned from2 sentences. A hierarchy may be needed.Logical formLearned from2 sentences. Hierarchy may undergo an avoidance.Logical formLearned from2 sentences. A (class hierarchy) may change.Logical formLearned from2 sentences. A rank can be in a (dominance hierarchy).Logical formLearned from2 sentences. Angels can be in a hierarchy.Logical formLearned from2 sentences. A hierarchy may remain stable.Logical formLearned from2 sentences. Everyone may stand in a hierarchy.Logical formLearned from2 sentences. Issues may follow a hierarchy.Logical formLearned from2 sentences. A hierarchy can be constituted-of-or-filled-with principles.Logical formLearned from2 sentences. A hierarchy may pertain-to an (animal kingdom).Logical formLearned from2 sentences. Bishops can be in a hierarchy.Logical formLearned from2 sentences. A hierarchy can be constituted-of-or-filled-with articles.Logical formLearned from2 sentences. A hierarchy may be reestablished.Logical formLearned from2 sentences. A hierarchy may pertain-to a company.Logical formLearned from2 sentences.