Larger ontologies tend to include several minor domains. By experimentation we found that for
diverse ontologies, like the Wine ontology (presented in section 4.2) that also imports a Food ontology, it
can be beneficial to add keyword(s) that represents the overall subject domain. The result of using
keyword(s) is less distinct and more homogeneous FVs. On other hand, omitting keywords would create
FVs that are more distinct and true to the local variances in the ontology.