Task: Question Generation
Input (English): One of the more prominent works of Italy's premier horror stylist Mario Bava, this occult murder mystery interweaves elements of the traditional giallo thriller formula with an unusual Gothic ghost story. In a turn-of-the-century Carpathian village a series of murders are occurring in which the victims are found with silver coins embedded in their hearts. The coins are revealed to be talismans placed on the victims by the town witch (Fabienne Dali), meant to ward off the supernatural powers of the aged Baroness Graps (Giana Vivaldi). The baroness has been performing these duties for the ghost of her murdered daughter, who wants to claim the villagers' souls. In order to free the village from the curse, Dali must find the sequestered baroness and destroy her.
Output (English): what is ghost story?