{ "items" : [
    { "id" : "http://dbpedia.org/resource/NOx"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "NOx is a generic term for the mono-nitrogen oxides NO and NO2 (nitric oxide and nitrogen dioxide).  They are produced from the reaction among nitrogen, oxygen and even hydrocarbons (during combustion), especially at high temperatures.  In areas of high motor vehicle traffic, such as in large cities, the amount of nitrogen oxides emitted into the atmosphere as air pollution can be significant."] } } }
