{ "items" : [
    { "id" : "http://dbpedia.org/resource/Defining_equation_(physics)"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "In physics, defining equations are equations that define new quantities in terms of base quantities. This article uses the current SI system of units, not natural or characteristic units."] } } }
