Kwok Cheung Lan Kei Shiu Ho Robert Wing Pong Luk Hong Va Leong Semantic Role Labeling Using Maximum Entropy. 954-961 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3314&spage=954 2004 conf/cis/2004 CIS db/conf/cis/cis2004.html#LanHLL04