Didn't I. Ounis and Gupta, N. not co-author a paper?
Was a paper not not co-authored by Iadh Ounis and Gupta, N.?
ASK { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/21/141> . ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/91/7449> }
<https://dblp.org/pid/21/141> <https://dblp.org/pid/91/7449>