input question: Generate a question that has the following answer: Math for the following movie plot: "21 Grams" is done in the Quentin Tarantino "all the scenes are out of order" style, which is a good way to tell this story.Paul Rivers (Sean Penn) is a college math professor and a long-time smoker who is close to death from heart failure. He's weak, coughs and gasps, and drags around an oxygen tank to help him breathe. He's on the transplant list for a new heart. His wife wants nothing more than to get pregnant by him before he dies.Jack Jordan (Benicio Del Toro) is an ex-con that has spent more time in jail than out, but has reformed and is working in a church, spreading the gospel, and helping kids that are heading toward the same kind of trouble he's been in. He and his wife have two young children.Cristina Peck (Naomi Watts) seems to be a typical housewife. She and her husband have two young daughters, and they appear to have an ideal life.One afternoon Jack accidentally runs over Christina's husband and daughters while they're out walking. Both of the little girls are killed, and the father ends up brain dead. Christina consents to organ donation, and her husband's heart ends up being transplanted into Paul.Jack turns himself in for the hit-and-run and goes to jail, but is later released. Paul recovers and hires a private detective to find the donor family (to find out "who he is"). The detective comes up with the information not only about the donor and his widow, but also about the ex-con. Most of the movie is about the relationships that develop between these three main characters.???
output answer: What subject does Paul Rivers teach?

input question: Generate a question that has the following answer: garbage bags for the following movie plot: High school teacher and writer Frannie Avery meets a student at a local bar, and when she heads to the bathroom sees a woman performing oral sex on a man. A few days later, Detective Giovanni Malloy questions her as he investigates the gruesome murder of a young woman, whose severed limb was found in her garden. They flirt despite the grisly nature of their introduction, and meet at the same bar later. Frannie is alternately thrilled and frightened by the detective's sexual aggressiveness, even as she grows more disillusioned with the attitudes and crude behavior of other men, including the detective's partner, Richard Rodriguez. Even as Malloy defends his partner, who can no longer carry a gun because he threatened his unfaithful wife, he promises he will do anything she wants except hit her. She leaves abruptly and is assaulted walking home, but calls Malloy and their affair begins that night. Frannie recognizes the detective's tattoo, from the man in the basement of the bar, and asks her sister Pauline if she would trust a man who got a blow job in a bar. Pauline says yes, but Frannie is still suspicious. After Malloy tells her that she and the first victim were in the same bar the night of the murder, and she might have seen the murderer, she begins to suspect that Malloy may actually be the killer, especially after a second victim is found. But later she goes with him to a woodsy spot by the water, where he scares her by shooting at garbage bags floating on the surface, then tells her she should learn how to shoot. She surprises herself by taking aim and shooting well, before they head back to the city. She finds her old boyfriend in her bed when she gets home, and goes back to her sister's apartment, where she finds the door open and Pauline's dismembered body. She is now more frightened of Malloy than ever, but goes home and gets drunk, and almost stumbles into bed with her student before throwing him out. Malloy's partner is outside watching as the young man runs out, and Frannie shouts out the window...???
output answer: What was floating on the surface?

input question: Generate a question that has the following answer: Jill for the following movie plot: Jill Banford and Ellen March struggle to support themselves by raising chickens on an isolated farm in rural Canada. Dependent Jill tends to household chores and finances while the self-sufficient Ellen deals with heavier work, such as chopping wood, repairing fences, and stalking the fox that keeps raiding their coops, although she is hesitant about killing it. Jill seems content with their secluded existence, but the frustrated Ellen is less enchanted by the solitude. In the dead of winter, merchant seaman Paul Grenfel arrives in search of his grandfather, the now-deceased former owner of the farm. With nowhere else to go while on leave, he persuades the women to allow him to stay with them in exchange for helping with the work. Tension among the three slowly escalates when his attentions to Ellen arouse Jill's resentment and jealousy. Eventually Paul tracks and kills the fox. Just before his departure, he makes love to Ellen and asks her to leave with him, but she confesses she would feel guilty about abandoning Jill. After Paul returns to his ship, the women resume their regular routine. Paul returns unexpectedly while the two are chopping down a dying oak. He offers to complete the job and warns Jill to move away from the tree's potential path as it falls, but she refuses to listen and is killed when it crashes on her. Ellen sells the farm and she and Paul set off to start a new life together.???
output answer: Who is killed by a tree?

input question: Generate a question that has the following answer: 1923. for the following movie plot: Panamericana - One street, two continents, three months, 12 countries and 13,000 kilometers!The adventure begins in Laredo (USA) and documents a trip through Central and South America til Buenos Aires (Argentina). The film Panamericana tells stories of lifes on and around the Panamericana. It illustrates unique natural beauty, contrasts of wealth and poverty, the importance of money as well as the world's longest consecutive road network from northern Alaska to southern Chile.Filmed on the original historic route between Laredo (USA) and Buenos Aires (Argentina), the idea of a single cross-continental highway was at the Fifth International Conference of American States in 1923. To consolidate peace, the convention on the Carretera Panamericana finally got signed on 23 December 1936 at the Inter-American Conference in Buenos Aires.???
output answer:
In what year did the Fifth International Conference of American States take place?