Which author named Kasif published the paper on Knowledge gaps?
Name the author who published the paper on Knowledge gaps and has the name Kasif.
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/journals/nar/ChangHRAKRS16> <https://dblp.org/rdf/schema#authoredBy> ?answer }
<https://dblp.org/rec/journals/nar/ChangHRAKRS16>