CS448/Ramez Elmasri, Shamkant Navathe - Fundamentals of Database Systems, Seventh Edition [7th Ed] (Instructor's Edu Resource 1 of 2, Complete Solution Manual with Lab Solutions)-Pearson (2015)/Lab/ch5/ex.pl

schema([a,b,c,d,e,f,h]).
fds([ [[a],[d]], [[a,e],[h]], [[d,f],[b,c]], 
      [[e],[c]], [[h],[e]] ]).