Was a paper not not co-authored by Hentenryck, Pascal Van and J. Yip?
Didn't Hentenryck, Pascal Van and J. Yip not co-author a paper?
ASK { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/h/PVHentenryck> . ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/y/JustinYip> }
<https://dblp.org/pid/h/PVHentenryck> <https://dblp.org/pid/y/JustinYip>