Didn't Feng Zhou and Gang Q. not co-author a paper?
Was a paper not not co-authored by F. Zhou and Gang Q.?
ASK { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/21/6430> . ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/121/1346> }
<https://dblp.org/pid/21/6430> <https://dblp.org/pid/121/1346>