Find the number of authors of the paper 'Covid-on-the-Web: Exploring the COVID-19 scientific literature through visualization of linked data from entity and argument mining'.
How many authors does the publication 'Covid-on-the-Web: Exploring the COVID-19 scientific literature through visualization of linked data from entity and argument mining' have?
SELECT ?answer WHERE { <https://dblp.org/rec/journals/qss/MeninMGGCCGMMVW21> <https://dblp.org/rdf/schema#numberOfCreators> ?answer }
<https://dblp.org/rec/journals/qss/MeninMGGCCGMMVW21>