About: http://webisa.webdatacommons.org/397446375

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	There were two very public tragedies.MAN: Challenger, go at throttle-up.RAY SUAREZ: The Challenger explosion just after launch in Jan. 1986 killed seven astronauts, including Christa McAuliffe, the first teacher in space.
http://www.w3.org/ns/prov#wasQuotedFrom	pbs.org