showGR (SDependency qsn)   = " (dependency of " ++ showQSNBool qsn True ++ ")"
showGR (SDependency qsn)   = " (dependency of " ++ showQSNBool qsn True ++ ")"
showGR (SDependency qsn)   = " (dependency of " ++ showQSNBool qsn True ++ ")"