Didn't Lee, H. and S. Abdulhadi not co-author a paper?
Was a paper not not co-authored by Hyunsung Lee and Salah Abdulhadi?
ASK { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/77/41> . ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/42/10472> }
<https://dblp.org/pid/77/41> <https://dblp.org/pid/42/10472>