About: http://webisa.webdatacommons.org/81772360

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	In later work, Tofte and others show how to infer region types and lifetimes and how to implement their theory [Tofte and Birkedal 1998; Birkedal et al. 1993; =-=Birkedal et al. 1996-=-].
http://www.w3.org/ns/prov#wasQuotedFrom	psu.edu