Bug concerns Project inline
Story concerns Project inline

Bug corrected_in Version inline CONSTRAINT E concerns P, X version_of P
Story done_in Version inline CONSTRAINT E concerns P, X version_of P

Bug   identical_to Bug   symetric
Bug   identical_to Story symetric
Story identical_to Story symetric

Story depends_on Story
Story depends_on Bug
Bug   depends_on Story
Bug   depends_on Bug

Bug     see_also Bug	 symetric
Bug	see_also Story	 symetric
Bug	see_also Project symetric
Story	see_also Story	 symetric
Story	see_also Project symetric
Project see_also Project symetric

Project uses Project

Version version_of Project inline
Version todo_by EUser

Comment about Bug inline
Comment about Story inline
Comment about Comment inline

EUser interested_in Project