How many co-authors does Philippe C. have?
Count the number of co-authors that Philippe C. has.
SELECT (COUNT(DISTINCT ?answer) AS ?count) WHERE { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/126/3130> . ?x <https://dblp.org/rdf/schema#authoredBy> ?answer FILTER(?answer != <https://dblp.org/pid/126/3130>) }
<https://dblp.org/pid/126/3130>