How many publications did the authors of the paper 'SLAs Empowering Services in the Future Internet' publish in Future Internet Assembly?
Mention the count of papers published by the authors of 'SLAs Empowering Services in the Future Internet' in Future Internet Assembly.
SELECT DISTINCT (COUNT(?answer) AS ?count) WHERE { <https://dblp.org/rec/conf/fia/ButlerLNTTYCP11> <https://dblp.org/rdf/schema#authoredBy> ?x . ?answer <https://dblp.org/rdf/schema#authoredBy> ?x . ?answer <https://dblp.org/rdf/schema#publishedIn> 'Future Internet Assembly' }
<https://dblp.org/rec/conf/fia/ButlerLNTTYCP11>