Count the number of papers that Hirotoshi Y. has published in J. Robotics Mechatronics.
How many papers has Hirotoshi Yamamoto published in J. Robotics Mechatronics?
SELECT (COUNT(DISTINCT ?answer) AS ?count) WHERE { ?answer <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/191/5411> . ?answer <https://dblp.org/rdf/schema#publishedIn> 'J. Robotics Mechatronics' }
<https://dblp.org/pid/191/5411>