<http://webisa.webdatacommons.org/181460479>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<timus.ru> .
<http://webisa.webdatacommons.org/prov/435269109>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/181460479> .
<http://webisa.webdatacommons.org/181460479>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/181460479>	<http://www.w3.org/ns/prov#value>	"Problems are mostly collected from contests held at the Ural Federal University, Ural Championships, Ural ACM ICPC Subregional Contests, and Petrozavodsk Training Camps." .