| http://www.w3.org/ns/prov#value | - If the movements disappear, such as in the case where the person is in a comma, or suffering from some immobilising injury, or if these movements are solely caused by the vibrations or tremors of a neighbouring machine, then after a certain lapse of time (for example 10 seconds) a whistling signal is transmitted by the device to warn the person that the central alarm will shortly be sounded unless
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