How to import an rdf file to neo4j

Iam new to neo4j .Iam in the learning stage.Can you please guide me how to import an rdf file to neo4j .I have already gone through the manual of importing rdf and importing ontologies .Iam importing the rdf files from dbpedia and Iam giving the URL of that in
CALL n10s.rdf.import.fetch("https://github.com/neo4j-labs/neosemantics/raw/3.5/docs/rdf/nsmntx.ttl","Turtle"); in this but the nodes are loading without any relations
Iam facing issue with path too.CALL n10s.rdf.import.fetch("file:///D:\Data\some_rdf_file.rdf", "RDF/XML"); using this I can do it. But it is showing me error even if Iam loading from D-Drive