| http://www.w3.org/ns/prov#value | - a bedframe, and a mattress positioned on the bedframe, the mattress including a support, surface, a pulsation therapy device configured to pulsate at a predetermined rate, a rotational therapy device configured to position a left portion of the support surface higher than a right portion of the support surface for a period of time and then position the left portion of the support surface lower tha
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