Temporal ordering relations on time points and the Allen relations on time intervals http://www.ksl.stanford.edu/KSL_Abstracts/KSL-03-05.html http://www.ksl.stanford.edu/software/IW/registry/SRC/IW-TEAM.daml Fri Jun 06 16:11:19 PDT 2003 Fri Jun 06 16:11:19 PDT 2003