Was a paper not not co-authored by Yukoh Kida and Shigen S.?
Didn't Yukoh Kida and Shigen S. not co-author a paper?
ASK { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/237/8581> . ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/237/8728> }
<https://dblp.org/pid/237/8581> <https://dblp.org/pid/237/8728>