Borys Omelayenko Monica Crubézy Dieter Fensel V. Richard Benjamins Bob J. Wielinga Enrico Motta Mark A. Musen Ying Ding UPML: The Language and Tool Support for Making the Semantic Web Alive. 141-170 2003 conf/dagstuhl/2003sweb Spinning the Semantic Web db/conf/dagstuhl/sweb2003.html#OmelayenkoCFBWMMD03