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    { "id" : "http://dbpedia.org/resource/Lunar_theory"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "Lunar theory attempts to account for the motions of the Moon. There are many irregularities (or perturbations) in the Moon's motion, and many attempts have been made to account for them." ] ,
        "http://www.w3.org/2000/01/rdf-schema#seeAlso" : [ "http://dbpedia.org/resource/Variation_(astronomy)",
          "http://dbpedia.org/resource/Equation_of_the_center",
          "http://dbpedia.org/resource/Hipparchus",
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