/*   The Dynasty Database     */
/*   Based on the Carrington Family from     */
/*   the TV series called Dynasty            */

domains
     person = symbol
predicates
     is_parent_of(person,person)
     is_female(person)
     is_female(person)
clauses
   is_parent_of(blake,stephen).     is_parent_of(blake,adam).
   is_parent_of(blake,falon).       is_parent_of(blake,amanda).
   is_parent_of(blake,christina).   is_parent_of(alexis,stephen).
   is_parent_of(alexis,adam).       is_parent_of(alexis,falon).
   is_parent_of(alexis,amanda).     is_parent_of(crystal,christina).
   is_parent_of(stephen,danny).     is_parent_of(sammy_jo,danny).
   is_parent_of(falon,little_blake).is_parent_of(geoff,little_blake).
   is_female(alexis).               is_female(crystal).
   is_female(falon).                is_female(amanda).
   is_female(sammy_jo).             is_female(christina).
   is_male(blake).                  is_male(stephen).
   is_male(adam).                   is_male(little_blake).
   is_male(geoff).                  is_male(danny).