About: http://webisa.webdatacommons.org/280550906

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	Real-time systems are known to be hard to test because they are required to function correct both with respect to what the system does and when it does it.
http://www.w3.org/ns/prov#wasQuotedFrom	kb.se