( mbool 
   (
      (
         ( "2003-11-20-06:06"  "2003-11-20-07:08"  TRUE  FALSE ) TRUE )
      (
         ( "2003-11-20-07:08"  "2003-11-20-07:08"  TRUE  TRUE ) FALSE )
      (
         ( "2003-11-20-07:08"  "2003-11-20-08:10"  FALSE  TRUE ) TRUE )))