Which author published the paper on Causal relations and has the name Sadek?
Name the author who published the paper on Causal relations and has the name Jawad.
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/conf/nldb/Sadek13> <https://dblp.org/rdf/schema#authoredBy> ?answer }
<https://dblp.org/rec/conf/nldb/Sadek13>