Challenges for the Multilingual Semantic Web Walther v. Hahn author Cristina Vertan author 2005-sep 13-15 text Workshop on Semantic Web technologies for machine translation Phuket, Thailand conference publication hahn-vertan-2005-challenges https://aclanthology.org/2005.mtsummit-swtmt.3/ 2005-sep 13-15 5 9