An alternative may be provided by a (class hierarchy).Logical formLearned from2 sentences. Part may pertain-to a (package hierarchy).Logical formLearned from2 sentences. (Viewpoint nodes) may be affected by a (transformation hierarchy).Logical formLearned from2 sentences. Nodes can be part of a (transformation hierarchy).Logical formLearned from2 sentences. Transformations may accumulate_down a (scene graph hierarchy).Logical formLearned from2 sentences. A (transform hierarchy) may feed.Logical formLearned from2 sentences. A (presentation component) may perform graphics of a (transform hierarchy).Logical formLearned from2 sentences. A mechanism can be separate from a (scene graph hierarchy).Logical formLearned from2 sentences. (Dominance hierarchies) may be observed.Logical formLearned from2 sentences. A (dominance hierarchy) can be strong.Logical formLearned from2 sentences. A position can be in a (pack hierarchy).Logical formLearned from2 sentences. A hierarchy can be stiff.Logical formLearned from2 sentences. A social hierarchy may exist within a group of (killer whales).Logical formLearned from2 sentences. A hierarchy can be constituted-of-or-filled-with planets.Logical formLearned from2 sentences. A shape may pertain-to a (class hierarchy).Logical formLearned from2 sentences.