About: http://webisa.webdatacommons.org/321588367

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	A third method is to provide a functional purA gene on an integrating vector, such as a plasmid or bacteriophage unable to replicate within the recipient purA host, and thus selecting for integration of the purA vector.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com