{ "items" : [
    { "id" : "http://dbpedia.org/resource/Revolutions_per_minute"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min) is a measure of the frequency of rotation, specifically the number of rotations around a fixed axis in one minute. It is used as a measure of rotational speed of a mechanical component. In the French language, tr/mn (tours par minute) is the common abbreviation. The German language uses the abbreviation  U/min or u/min (Umdrehungen pro Minute)."] } } }
