Q:Question: What do Lillith's parents tell Emily she feeds on? If there is no answer, please output "Insufficient information to provide an answer.". Movie title: Case 39 Context: Emily Jenkins (Renee Zellweger) is a social worker living in Oregon, who is assigned to investigate the family of ten-year-old Lillith Sullivan (Jodelle Ferland), as her grades have declined and an emotional rift with her parents has emerged. Emily suspects that the parents have been mistreating Lillith. Emily's fears are confirmed when Lillith's parents try to kill her by gassing her in the oven at home. Emily saves Lillith with the help of Detective Mike Barron (Ian McShane). Lillith is originally sent to a children's home, but she begs Emily to look after her instead. With the agreement of the board, Emily is assigned to take care of Lillith until a suitable foster family comes along. In the meantime, Lillith's parents, Edward and Margaret (Callum Keith Rennie and Kerry O'Malley) are placed in a mental institution. Not too long after Lillith moves in, strange things begin to happen around Emily. Two weeks later, another of Emily's cases, a boy named Diego (Alexander Conti), suddenly murders his parents with a crowbar, and Barron informs Emily that somebody phoned Diego from her house the night before the crime. As she is suspected of involvement in the incident, Lillith undergoes a psychiatric evaluation by Emily's best friend, Douglas J. Ames (Bradley Cooper). During the session, however, Lillith turns the evaluation around, asking Douglas what his fears are and subtly threatening him. That night after receiving a strange phone call, Douglas is panicked by a mass of hornets coming out of his body in hysteria and kills himself in his bathroom. Emily gradually becomes fearful of Lillith, so she heads to the mental asylum for answers from Lillith's parents. They tell her that, far from being truly human, Lillith is actually a demon like-Succubus who feeds on emotion, and that they had tried to kill her in an attempt to save themselves. Lillith's father tells Emily that the only way to kill Lillith is to get her to sleep. Shortly after Emily leaves the asylum, Lillith's mother hallucinates being on fire, and...
A:
emotion