Was a paper not not co-authored by Paul W. Cuff and Zeman, J. Jay?
Didn't Paul W. Cuff and Zeman, J. Jay not co-author a paper?
ASK { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/117/8945> . ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/55/6131> }
<https://dblp.org/pid/117/8945> <https://dblp.org/pid/55/6131>