How many authors does 'Beacon trains: blazing a trail through dense BLE environments' have?
Find the number of authors of the paper 'Beacon trains: blazing a trail through dense BLE environments'.
SELECT ?answer WHERE { <https://dblp.org/rec/conf/mobicom/KravetsHW16> <https://dblp.org/rdf/schema#numberOfCreators> ?answer }
<https://dblp.org/rec/conf/mobicom/KravetsHW16>