ChEBI Ontology | Generate chebi_lite.owl and its .obo equivalent

The chebi_lite.owl file takes into account this information:
All the relations among the compound.
Description
Alternative Ids
ChEBI Stars
ChEBI Id
RDF Label
OBO Namespace.
For example, this is the XML fragment for the water compound in the chebi_lite.owl file:
    <owl:Class rdf:about="http://purl.obolibrary.org/obo/CHEBI_15377">
        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/CHEBI_33693"/>
        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/CHEBI_37176"/>
        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/CHEBI_52625"/>
        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/RO_0000087"/>
                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/CHEBI_48360"/>
            </owl:Restriction>
        </rdfs:subClassOf>
        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/RO_0000087"/>
                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/CHEBI_75771"/>
            </owl:Restriction>
        </rdfs:subClassOf>
        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/RO_0000087"/>
                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/CHEBI_75772"/>
            </owl:Restriction>
        </rdfs:subClassOf>
        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/RO_0000087"/>
                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/CHEBI_76413"/>
            </owl:Restriction>
        </rdfs:subClassOf>
        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/RO_0000087"/>
                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/CHEBI_76971"/>
            </owl:Restriction>
        </rdfs:subClassOf>
        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/RO_0000087"/>
                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/CHEBI_77746"/>
            </owl:Restriction>
        </rdfs:subClassOf>
        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/chebi#is_conjugate_acid_of"/>
                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/CHEBI_16234"/>
            </owl:Restriction>
        </rdfs:subClassOf>
        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/chebi#is_conjugate_base_of"/>
                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/CHEBI_29412"/>
            </owl:Restriction>
        </rdfs:subClassOf>
        <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">An oxygen hydride consisting of an oxygen atom that is covalently bonded to two hydrogen atoms</obo:IAO_0000115>
        <oboInOwl:hasAlternativeId rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CHEBI:10743</oboInOwl:hasAlternativeId>
        <oboInOwl:hasAlternativeId rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CHEBI:13352</oboInOwl:hasAlternativeId>
        <oboInOwl:hasAlternativeId rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CHEBI:27313</oboInOwl:hasAlternativeId>
        <oboInOwl:hasAlternativeId rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CHEBI:42043</oboInOwl:hasAlternativeId>
        <oboInOwl:hasAlternativeId rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CHEBI:42857</oboInOwl:hasAlternativeId>
        <oboInOwl:hasAlternativeId rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CHEBI:43228</oboInOwl:hasAlternativeId>
        <oboInOwl:hasAlternativeId rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CHEBI:44292</oboInOwl:hasAlternativeId>
        <oboInOwl:hasAlternativeId rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CHEBI:44701</oboInOwl:hasAlternativeId>
        <oboInOwl:hasAlternativeId rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CHEBI:44819</oboInOwl:hasAlternativeId>
        <oboInOwl:hasAlternativeId rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CHEBI:5585</oboInOwl:hasAlternativeId>
        <oboInOwl:hasOBONamespace rdf:datatype="http://www.w3.org/2001/XMLSchema#string">chebi_ontology</oboInOwl:hasOBONamespace>
        <oboInOwl:id rdf:datatype="http://www.w3.org/2001/XMLSchema#string">CHEBI:15377</oboInOwl:id>
        <oboInOwl:inSubset rdf:resource="http://purl.obolibrary.org/obo/chebi#3_STAR"/>
        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">water</rdfs:label>
    </owl:Class>
Edited May 22, 2023 by Carlos Andres Moreno Velez