{ "items" : [
    { "id" : "http://dbpedia.org/resource/Constructivism_(mathematics)"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "In the philosophy of mathematics, constructivism asserts that it is necessary to find (or \"construct\") a mathematical object to prove that it exists. When one assumes that an object does not exist and derives a contradiction from that assumption, one still has not found the object and therefore not proved its existence, according to constructivism."] } } }
