Find the number of authors of the paper 'Semantic-audio retrieval'.
Mention the number of authors of the paper 'Semantic-audio retrieval'.
SELECT ?answer WHERE { <https://dblp.org/rec/conf/icassp/Slaney02> <https://dblp.org/rdf/schema#numberOfCreators> ?answer }
<https://dblp.org/rec/conf/icassp/Slaney02>