Species may use cavities.Logical formLearned from2 sentences. A cavity can be a sac.Logical formLearned from2 sentences. Cavities can be in soil.Logical formLearned from2 sentences. Epithelias may line cavities of internal organs.Logical formLearned from2 sentences. Cavities may pertain-to internal organs.Logical formLearned from2 sentences. A cavity may undergo extensions.Logical formLearned from2 sentences. A portal to an astral plane may appear as cavity.Logical formLearned from2 sentences. A (mouth cavity) may contain a beak.Logical formLearned from2 sentences. Tentacles can be around a (mouth cavity).Logical formLearned from2 sentences. A partition can be between some nasal cavities.Logical formLearned from2 sentences. A head can be in a (chest cavity) of an exo-suit.Logical formLearned from2 sentences. A floor may pertain-to a pelvic cavity.Logical formLearned from2 sentences. (Water fluoridation) can be effective at reducing cavities.Logical formLearned from2 sentences. A location can be in an oral cavity.Logical formLearned from2 sentences. A roof may pertain-to a (mantle cavity).Logical formLearned from2 sentences.