Question: Who sleepwalks at night? If there is no answer, please output "Insufficient information to provide an answer.". Movie title: Insidious Context: A married couple Josh (Patrick Wilson) and Renai (Rose Byrne), their sons Dalton (Ty Simpkins) and Foster (Andrew Astor), and infant daughter Cali have recently moved into a new home. One night, Dalton is drawn to the attic when he hears creaking noises and sees the door open by itself. He falls from a ladder while investigating and sees a figure in the shadows. Hearing his terrified screams, Renai and Josh rush to his aid and declare the attic "off limits" to the children. The next day, Dalton falls into an inexplicable coma. After three months of treatment without result, Renai and Josh are allowed to take Dalton home. Soon after, paranormal activity begins to occur; Renai begins hearing voices over the baby monitor when no one is in Cali's room, Foster says that Dalton sleepwalks at night, Renai sees a frightening figure of a man in Cali's room, who vanishes when Josh comes and the burglar alarm is repeatedly triggered for no reason with the front door open. After Renai finds a bloody hand print on Dalton's bed, she questions Josh about the house, but he ignores her. That night, Renai is attacked by the figure from Cali's room, and the Lamberts decide to abandon the house and move elsewhere. In the new house, Renai sees the ghost of a dancing boy who leads her to Dalton's room. Josh's mother, Lorraine (Barbara Hershey), visits them one day, and says she had a dream in which a figure in Dalton's room replies "Dalton" when she asks what it wants; at the same time, she sees a monstrous red-faced demon standing behind Josh and screams, while Dalton's room is ransacked and Dalton himself is found lying on the floor. Lorraine calls demonologists Elise Reiner (Lin Shaye), Specs (Leigh Whannell), and Tucker (Angus Sampson). Upon entering, Elise senses a presence in the house and upon entering Dalton's room, she sees something on the ceiling; to which Specs draws the demonic, red-faced figure Lorraine saw. Elise explains that Dalton is not in a coma; he was born with the ability to travel mentally to the astral...
The answer to this question is:
Dalton