A level may pertain-to a spine.Logical formLearned from24 sentences. A spine may be curved.Logical formLearned from24 sentences. An operation can be on a spine.Logical formLearned from24 sentences. Changes can be in a spine.Logical formLearned from24 sentences. A spine may be severed.Logical formLearned from23 sentences. A spine can be venomous.Logical formLearned from23 sentences. Curves may pertain-to a spine.Logical formLearned from23 sentences. Pressure can be on a spine.Logical formLearned from23 sentences. A spine may pertain-to mountains.Logical formLearned from23 sentences. A (spine surgery) can be invasive.Logical formLearned from23 sentences. A spine can be bent.Logical formLearned from23 sentences. A tip may pertain-to a spine.Logical formLearned from23 sentences. Spines can be hollow.Logical formLearned from22 sentences. An anal fin may consist of some spines.Logical formLearned from22 sentences. A female may straighten a spine.Logical formLearned from22 sentences.