Exampleexecutequery.py

from rdflib import Graph, URIRef, ConjunctiveGraph, BNode
from rdflib.plugins.stores.memory import Memory

store = Memory()
# Create a dataset (graph store)
dataset = ConjunctiveGraph(store=store)

# Define the named graph URIs
ontology1_uri = URIRef("http://example.org/ontology1")
ontology2_uri = URIRef("http://example.org/ontology2")

# Create named graphs
ontology1_graph = Graph(store=store, identifier=ontology1_uri)
ontology2_graph = Graph(store=store, identifier=ontology2_uri)

# Load the OWL files into the respective named graphs
ontology1_graph.parse("/home/citius/onto-evol-llm/epo/v3.1.0/ePO_owl_core_v3.1.0.ttl", format="turtle")
ontology2_graph.parse("/home/citius/onto-evol-llm/epo/v4.0.0/ePO_owl_core_v4.0.0.ttl", format="turtle")	

# Original query to find new classes in Ontology 2
print("\nNew classes in Ontology 2:")
query = """
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>

SELECT ?newClass
WHERE {
  GRAPH <http://example.org/ontology2> {
    ?newClass a owl:Class .
  }
  FILTER NOT EXISTS {
    GRAPH <http://example.org/ontology1> {
      ?newClass a owl:Class .
    }
  }
}
"""
for row in dataset.query(query):
    print(f"New class: {row.newClass}")