Please answer the following question: Extract the answer to the following question from the movie plot. If the question isn't answerable, please output "Can't answer". Question: What does Burt use to catch the cornfield on fire? Title: Children of the Corn Movie plot: In the fictional town of Gatlin, Nebraska, Job tells the story of how the town became a safe haven for a group of young cultists. The economy of the town is mostly agricultural, and the town is surrounded by vast cornfields. One particular year the corn crop fails and the people of Gatlin turn to prayer in an attempt to ensure a successful harvest. A mysterious boy preacher, Isaac Chroner (John Franklin), arrives and takes all the children of Gatlin into a cornfield to speak to them about the prophecies of a demonic version of the Judeo-Christian God called "He Who Walks Behind The Rows". Isaac, through his lieutenant Malachai (Courtney Gains), leads the children of the town in a revolution, brutally killing all of the adults in the town. Over the ensuing years, the children take any adults passing through as sacrifices.Three years later, Burt (Peter Horton) and his girlfriend Vicky (Linda Hamilton) pass through Nebraska while driving cross-country to Burt's new job as a physician in Seattle, Washington. They are traveling in their car and hit a small boy out on the highway. This boy was one of the Gatlin children who tried to escape the iron hand of the death cult. The couple place his body in the trunk. They encounter an old mechanic, who is little to no help, as the children of Gatlin have employed him to lead all adults passing through to the town, but they betray him and kill him anyway. Burt and Vicky finally end up in Gatlin, after searching for several hours for a phone. A struggle ensues between the couple, "He Who Walks Behind the Rows" and the children as the couple are violently chased through the city. Burt and Vicky rescue Job and his little sister Sarah, who do not wish to be part of the cult. Vicky is captured by Malachai, and she is prepared as a sacrifice before they track down and capture Burt and the children.Meanwhile, Malachai and the others have grown tired of Isaac's arrogance. Assuming command over the children, Malachai orders Isaac to be sacrificed in Vicky's place. Night soon falls...
A:
A Molotov cocktail