Was a paper not not co-authored by Gunwoong Lee and Hee-Sook Yoo?
Didn't Gunwoong Lee and H. Yoo not co-author a paper?
ASK { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/27/7405> . ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/160/5472> }
<https://dblp.org/pid/27/7405> <https://dblp.org/pid/160/5472>