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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def initialize(self, pid, ore_software_id=d1_common.const.ORE_SOFTWARE_ID):
 """Create the basic ORE document structure."""

        # Set nice prefixes for the namespaces
        for k in list(d1_common.const.ORE_NAMESPACE_DICT.keys()):
            self.bind(k, d1_common.const.ORE_NAMESPACE_DICT[k])
        # Create the ORE entity
        oid = self._pid_to_id(pid)
        ore = rdflib.URIRef(oid)
        self.add((ore, rdflib.RDF.type, ORE.ResourceMap))
        self.add((ore, DCTERMS.identifier, rdflib.term.Literal(pid)))
        self.add((ore, DCTERMS.creator, rdflib.term.Literal(ore_software_id)))
        # Add an empty aggregation
        ag = rdflib.URIRef(oid + "#aggregation")
        self.add((ore, ORE.describes, ag))
        self.add((ag, rdflib.RDF.type, ORE.Aggregation))
        self.add((ORE.Aggregation, rdflib.RDFS.isDefinedBy, ORE.term("")))
        self.add(
            (ORE.Aggregation, rdflib.RDFS.label, rdflib.term.Literal("Aggregation"))
        )
        self._ore_initialized = True