$1.$ Find a domain which is proper for you.

$2.$ In your domain, find a dataset to transform.

$3.$ Create a schema for your data.

$4.$ From your data, according to your schema, transform your data to ontology. It means that create an ontology from data.

Note: RDF Turtle or OWL Turtle serialization is fine to use. In your project, define:

I$)$ what to transform.

II$)$ how to transform.

III$)$ what obtained from the transformation.

$*$ Sample XML$,$ CSV etc raw input file, tranformation processor, and RDF or OWL output file should be provided.