A center may pertain-to a spinal cord.Logical formLearned from15 sentences. A spinal cord may undergo an expansion.Logical formLearned from15 sentences. A spinal cord may suffice.Logical formLearned from15 sentences. A (pitching machine) may be built with cords.Logical formLearned from15 sentences. Cords can be constituted-of-or-filled-with firewood.Logical formLearned from15 sentences. A person may use a (pull cord).Logical formLearned from15 sentences. A cord can be adjustable.Logical formLearned from15 sentences. A person may need a cord.Logical formLearned from15 sentences. A (pull cord) may be attached to a foot.Logical formLearned from15 sentences. Ends may pertain-to cords.Logical formLearned from15 sentences. An umbilical cord can be invisible.Logical formLearned from15 sentences. (Nerve fibers) can be in a spinal cord.Logical formLearned from15 sentences. A cord may pertain-to a neck.Logical formLearned from15 sentences. Cords can be stretch.Logical formLearned from15 sentences. Cells can be from umbilical cords.Logical formLearned from15 sentences.