Theodore Patkos, Adam Z. Wyner, Adrian Giurca: Proceedings of the RuleML 2014 Challenge and the RuleML 2014 Doctoral Consortium hosted by the 8th International Web Rule Symposium, Challenge+DC@RuleML 2014, Prague, Czech Republic, August 18-20, 2014. CEUR Workshop Proceedings 1211, CEUR-WS.org 2014