About: http://webisa.webdatacommons.org/55505569

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Therefore it is impossible to use count() to determine if the variable is an array when the variable could be an empty array, or an array containing 1 item.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com