About: http://webisa.webdatacommons.org/286830010

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	I should emphasize at this point that until recently, string theory studies have been mostly focused on models which were supersymmetric, in which case they have vanishing or negative vacuum energy (cosmological constant).
http://www.w3.org/ns/prov#wasQuotedFrom	discovermagazine.com