A spine can be sturdy.Logical formLearned from6 sentences. A (steel spine) can be red.Logical formLearned from6 sentences. A (steel spine) can be sleek.Logical formLearned from6 sentences. A spine can be ragged.Logical formLearned from6 sentences. A spine may undergo a hyperextension.Logical formLearned from6 sentences. A mass can be on a spine.Logical formLearned from6 sentences. A spine may pertain-to a crowd.Logical formLearned from6 sentences. Disks can be in a spine.Logical formLearned from6 sentences. Spines may edge bodies.Logical formLearned from6 sentences. Horned lizards may sport a frill of spines.Logical formLearned from6 sentences. A frill can be constituted-of-or-filled-with spines.Logical formLearned from6 sentences. A title can be on a spine.Logical formLearned from6 sentences. (Mountain spines) may run north-south.Logical formLearned from6 sentences. Jolts can be to a spine.Logical formLearned from6 sentences. A spine can be in a background.Logical formLearned from6 sentences.