def METHOD_NAME():
    if not os.path.exists(LARGE_OWL_FILE):
        with open(LARGE_OWL_FILE, "w") as file:
            file.write("""<?xml version="1.0"?>
                    <rdf:RDF xmlns="http://www.semanticweb.org/msff2/ontologies/2021/9/untitled-ontology-90#"
                        xml:base="http://www.semanticweb.org/msff2/ontologies/2021/9/untitled-ontology-90"
                        xmlns:owl="http://www.w3.org/2002/07/owl#"
                        xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
                        xmlns:xml="http://www.w3.org/XML/1998/namespace"
                        xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
                        xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
                        <owl:Ontology rdf:about="http://www.semanticweb.org/msff2/ontologies/2021/9/untitled-ontology-90"/>
            """)
            for i in range(7*10**5):
                file.write(
                    """<!-- http://www.semanticweb.org/msff2/ontologies/2021/9/untitled-ontology-90#A$i -->
                    <owl:Class rdf:about="http://www.semanticweb.org/msff2/ontologies/2021/9/untitled-ontology-90#A$i"/>
                    <!-- http://www.semanticweb.org/msff2/ontologies/2021/9/untitled-ontology-90#B$i -->
                    <owl:Class rdf:about="http://www.semanticweb.org/msff2/ontologies/2021/9/untitled-ontology-90#B$i">
                        <rdfs:subClassOf rdf:resource="http://www.semanticweb.org/msff2/ontologies/2021/9/untitled-ontology-90#A$i"/>
                    </owl:Class>
                    <!-- http://www.semanticweb.org/msff2/ontologies/2021/9/untitled-ontology-90#C$i -->
                    <owl:Class rdf:about="http://www.semanticweb.org/msff2/ontologies/2021/9/untitled-ontology-90#C$i">
                        <rdfs:subClassOf rdf:resource="http://www.semanticweb.org/msff2/ontologies/2021/9/untitled-ontology-90#B$i"/>
                    </owl:Class>
                    <!-- http://www.semanticweb.org/msff2/ontologies/2021/9/untitled-ontology-90#D$i -->
                    <owl:Class rdf:about="http://www.semanticweb.org/msff2/ontologies/2021/9/untitled-ontology-90#D$i">
                        <rdfs:subClassOf rdf:resource="http://www.semanticweb.org/msff2/ontologies/2021/9/untitled-ontology-90#C$i"/>
                    </owl:Class>
                    """.replace('$i', str(i))
                )
            file.write("</rdf:RDF>") # ~ 1GB
    return LARGE_OWL_FIL