Count the number of co-authors that Trung Nguyen-Thoi has.
How many co-authors does Trung N. have?
SELECT (COUNT(DISTINCT ?answer) AS ?count) WHERE { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/164/9253> . ?x <https://dblp.org/rdf/schema#authoredBy> ?answer FILTER(?answer != <https://dblp.org/pid/164/9253>) }
<https://dblp.org/pid/164/9253>