Problem: Generate a question about the following movie plot: This article's plot summary may be too long or excessively detailed. Please help improve it by removing unnecessary details and making it more concise. (December 2009) (Learn how and when to remove this template message) On Planet 51, green humanoids with snail-like feelers and pointed ears live peacefully in a society reminiscent of the 1950s United States, but with alien technology and 1950s-themed alien homes. In the town of Glipforg, Lem is a teenager with a new part-time job at the local planetarium and a long-time crush on his neighbor, Neera. His best friend is Skiff, a big fan of the Humaniacs films. Lem tries to ask Neera on a date, but her hippie friend, Glar, keeps interrupting with his protest songs. A mysterious spacecraft goes into orbit around Planet 51 and sends out a signal. On Planet 51, under a secret Army installation called Base 9 (their version of Area 51), there is a basement filled with Earth artifacts including robotic satellites launched by the United States and the Soviet Union. The spacecraft's signal activates Rover, a wheeled A.I. probe. Rover escapes, following a program to locate the newly arrived astronaut. The Planetary Army becomes suspicious after Rover's escape and begins to investigate. The spacecraft touches down in Lem's backyard; NASA astronaut Charles "Chuck" T. Baker emerges. As Chuck plants the United States flag, he steps on a "rubber ducky" someone left on the ground. Everyone stares, and Chuck tries to get back into his module. Shocked when he realizes he is on an inhabited planet, Chuck runs about wildly and hides at the planetarium as the Army arrives on the scene. Planetary Army General Grawl consults Professor Kipple about the "alien invader". The Army quarantines the area and asks citizens to start a local civil defense force to prevent the citizens from becoming "zombies". At the planetarium, Lem discovers Chuck's hiding place. They are surprised to discover they speak the same language. Realizing this alien is no threat, Lem decides to help Chuck, hiding...

A: Whose spacecraft lands in Lem's backyard?

Problem: Generate a question about the following movie plot: In 1846, in Lower Manhattan's "Five Points" district, a territorial war raging for years, between the "Natives" (comprising those born in the United States of British descent) and recently arrived Irish, Catholic immigrants, is about to come to a head in Paradise Square. The Natives are led by William "Bill the Butcher" Cutting (Daniel Day-Lewis), an American Protestant nativist, with an open hatred of recent immigrants. The leader of the immigrant Irish, the "Dead Rabbits", is Priest Vallon (Liam Neeson), who has a young son, Amsterdam (played as a child by Cian McCormack). Cutting and Vallon meet with their respective gangs in a horrific and bloody battle, concluding when Bill kills Priest Vallon, which Amsterdam witnesses. Cutting declares the Dead Rabbits outlawed and orders Vallon's body be buried with honor. Amsterdam seizes the knife that kills his father, races off and buries it. He is found and taken to the orphanage at Hellgate. Sixteen years later, Amsterdam returns to New York as a grown man (Leonardo DiCaprio) in the second year of the Civil War. It is September 1862, days after the Battle of Antietam and the announcement of the Emancipation Proclamation. Arriving in Five Points, he reunites with an old friend, Johnny Sirocco (Henry Thomas). Johnny, now a member of a clan of pickpockets and thieves, introduces Amsterdam to Bill the Butcher, for whom the group steals. Amsterdam finds many of his father's old loyalists are now under Bill's control, including Happy Jack Mulraney (John C. Reilly), now a corrupt city constable and in Bill's pocket and McGloin (Gary Lewis), now one of Bill's lieutenants. Amsterdam soon works his way into the Butcher's inner circle. Amsterdam learns that each year, on the anniversary of the Five Points battle (February 16), Bill leads the city in saluting the victory over the Dead Rabbits and he makes plans to kill the Butcher during this ceremony, in front of the entire Five Points community, to exact public revenge. Amsterdam meets Jenny Everdeane (Cameron Diaz), a...

A: Who is Amsterdam's old friend?

Problem: Generate a question about the following movie plot: The film opens as a well dressed, barrel chested man stalks the late-night passengers of a subway train. He assaults and kills several people with a meat hammer, and a butchers hook. He dispatches his prey wordlessly, and with an uncannily unnatural strength. He wears a ring on his finger, adorned with eight stars.We are then introduced to Leon, a vegan photographer who heads into the city's subway system at night to take photographs. He is criticized constantly by other photographers for fleeing danger before shooting a full reel. One night, in a decision to break this trend, he saves a woman from a gang that is abusing her. The next day, he discovers this girl has gone missing. Leon is intrigued by the mystery, and begins to investigate newsreels about similar disappearances. His investigation leads him to a butcher named Mahogany, who he suspects has been killing subway passengers for as long as a hundred years.Leon attempts to turn some of the photos he has taken of Mahogany in to the police, but they refuse to believe him, and instead cast suspicion on his own motives in photographing the victims. Leon's involvement quickly turns into a dark obsession, upsetting his waitress girlfriend Maya, who is as disbelieving of his story as the police chief. Leon takes matters into his own hands, entering the subway train at midnight, only to witness a shocking bloodbath, as the butcher kills several passengers, then hangs them on meat hooks. Passing out on the subway floor, he awakes the next morning in a slaughterhouse with strange markings carved into his chest.A concerned Maya and her friend Jurgis, a short-order cook, begin to examine the photos Leon has been taking of Mahogany, leading them to the killer's apartment. After breaking and entering the butcher's home, Jurgis is captured, and brutally killed. Maya goes to the police, But finds that they are as unwilling to consider her story, as they were of Leon's. It is at this point that we begin to discover that the police may be involved in the cover-up of...

A:
How many stars are on the killer's ring?