How many research papers has Gregory M. Provan published?
Mention the number of papers that Gregory M. Provan has published.
SELECT (COUNT(DISTINCT ?answer) AS ?count) WHERE { ?answer <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/81/2894> }
<https://dblp.org/pid/81/2894>