About: http://webisa.webdatacommons.org/447185758

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	It???s been very difficult and there have been a number of obstacles, including the fact that it???s very hard to make good samples of these viruses,??? says Stubbs.
http://www.w3.org/ns/prov#wasQuotedFrom	potatogrower.com