How many authors does the publication 'In praise of 'Wilkes, Wheeler, and Gill'' have?
Find the number of authors of the paper 'In praise of 'Wilkes, Wheeler, and Gill''.
SELECT ?answer WHERE { <https://dblp.org/rec/journals/cacm/Campbell-Kelly11> <https://dblp.org/rdf/schema#numberOfCreators> ?answer }
<https://dblp.org/rec/journals/cacm/Campbell-Kelly11>