{ "items" : [
    { "id" : "http://caligraph.org/ontology/Economics_textbook"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#subClassOf" : [ "http://caligraph.org/ontology/Science_textbook" ] } },

    { "id" : "http://caligraph.org/ontology/Geology_textbook"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#subClassOf" : [ "http://caligraph.org/ontology/Science_textbook" ] } },

    { "id" : "http://caligraph.org/ontology/Textbook_in_thermodynamics_and_statistical_mechanics"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#subClassOf" : [ "http://caligraph.org/ontology/Science_textbook" ] } },

    { "id" : "http://caligraph.org/ontology/Science_textbook"
      "properties" : {
        "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" : [ "http://www.w3.org/2002/07/owl#Class" ] ,
        "http://www.w3.org/2000/01/rdf-schema#label" : [ "Science textbook" ] ,
        "http://www.w3.org/2000/01/rdf-schema#subClassOf" : [ "http://caligraph.org/ontology/Science_book",
          "http://caligraph.org/ontology/Textbook" ] ,
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://en.wikipedia.org/wiki/Category:Lists_of_science_textbooks",
          "http://en.wikipedia.org/wiki/Category:Science_textbooks" ] } },

    { "id" : "http://caligraph.org/ontology/Computer_science_textbook"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#subClassOf" : [ "http://caligraph.org/ontology/Science_textbook" ] } },

    { "id" : "http://caligraph.org/ontology/Mathematics_textbook"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#subClassOf" : [ "http://caligraph.org/ontology/Science_textbook" ] } },

    { "id" : "http://caligraph.org/ontology/Physics_textbook"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#subClassOf" : [ "http://caligraph.org/ontology/Science_textbook" ] } },

    { "id" : "http://caligraph.org/ontology/Textbook_in_electromagnetism"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#subClassOf" : [ "http://caligraph.org/ontology/Science_textbook" ] } },

    { "id" : "http://caligraph.org/ontology/Geography_textbook"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#subClassOf" : [ "http://caligraph.org/ontology/Science_textbook" ] } },

    { "id" : "http://caligraph.org/ontology/Biology_textbook"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#subClassOf" : [ "http://caligraph.org/ontology/Science_textbook" ] } },

    { "id" : "http://caligraph.org/ontology/Psychology_textbook"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#subClassOf" : [ "http://caligraph.org/ontology/Science_textbook" ] } },

    { "id" : "http://caligraph.org/ontology/Linguistics_textbook"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#subClassOf" : [ "http://caligraph.org/ontology/Science_textbook" ] } },

    { "id" : "http://caligraph.org/ontology/Engineering_textbook"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#subClassOf" : [ "http://caligraph.org/ontology/Science_textbook" ] } },

    { "id" : "http://caligraph.org/ontology/Textbook_on_classical_mechanics_and_quantum_mechanics"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#subClassOf" : [ "http://caligraph.org/ontology/Science_textbook" ] } },

    { "id" : "http://caligraph.org/ontology/Astronomy_textbook"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#subClassOf" : [ "http://caligraph.org/ontology/Science_textbook"] } } }
