Task: Question Generation
Input (English): A series of mysterious murders to which the only clue is an animal bite mark There is a reason behind his killings. Sang-gil (SONG Kang-ho) is a homicide detective who is perpetually passed over for promotion. One typically dismissive day hes gets assigned yet another simple case, a suicide, as well as a rookie female detective, Eun-young (LEE Na-young), as a partner. Sang-gil grudgingly starts the investigation, but the case turns out to be a premeditated murder intricately designed to include a time-bomb. Blinded by the chance to earn a long overdue promotion, Sang-gil continues to investigate on his own without reporting to his superiors. Eunyoung questions the oddity of the bite mark on the body, but Sang-gil ignores her. Meanwhile, a seemingly random wild animal attack kills another person, and Eun-young senses a connection between the two deaths. Without realizing the seriousness of the situation, Sang-gil stubbornly continues to investigate the case alone, and Eun-young reluctantly follows along. When the two discover the bite marks on the bodies belong to a wolfdog, a cross between a dog and a wolf, they also discover that all the victims are connected to one another Why did a wolfdog go on a murder-spree?
Output (English): Question: Why is Sang-gil obsessed with this investigation?, Answer: He desires an overdue promotion.