In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.

Input: Consider Input: Passage: After his mother's death, Vincent, a teenager with Tourette Syndrome, is enrolled in a behavioural facility by his father. While there he rooms with Alex, a Brit with obsessive compulsive disorder, and meets Marie who is in recovery for an eating disorder.
After a child films Vincent with his cellphone and Vincent attacks him, he and Marie are called into Dr. Rose's office where she chastises them and Marie steals her car keys. When Alex discovers Marie and Vincent running away in the middle of the night, he attempts to warn Dr. Rose and is kidnapped by them. The three of them head towards the ocean where Vincent hopes to scatter his mother's ashes. However Vincent does not remember the exact location of the beachside trip he and his mother made years ago. The trio finally settle on Santa Cruz as their destination. 
Dr. Rose informs Vincent's father, Robert, that his son has gone missing and rather than allow the police to apprehend them, she and Robert attempt to track them down. Along the way Marie develops a crush on Vincent.
When they finally reach the ocean Marie collapses before they can reach the water. Marie is hospitalized and while there, the three are reunited with Dr. Rose and Robert. Marie, who is being force fed and has been restrained asks Vincent to run away with her but Vincent refuses. Instead he has a conversation with his father, who apologizes for treating him poorly and decides to stay in Santa Cruz so he can be near Marie. Rather than leave with Dr. Rose, Alex decides to stay with him.

Output: What was the name of the person that put Vincent in the behavioural facility?


Input: Consider Input: Passage: Two days after the events of the first film, a traumatized and blood-covered Sarah escapes the cave with no memory of the events. She is taken to a hospital, where it is found that some of the blood on her belongs to Juno Kaplan. Sheriff Vaines takes his deputy Elen Rios, Sarah, and three spelunking specialists – Dan, Greg, and Cath – to the cave to find the missing women. The team members are sent down via an old mine shaft operated by the old, mysterious Ed Oswald.
The group discovers Rebecca's mutilated body, causing Sarah to have flashbacks of the crawlers and causing Vaines to believe Sarah may be responsible for the girls' disappearance.  While crawling through a tunnel, she attacks Vaines and the others, causing the others to split up. Vaines runs to search for Sarah, and in the process is surprised by a crawler, and fires his gun in a panic, causing a minor collapse in the cavern which traps Cath, separating her from Rios, Dan, and Greg.  The three decide to find an alternate way around in order to try to free Cath and arrive in a room full of bones, where they find Holly's video camera. They watch it and realize the women were attacked by the crawlers. The three are then themselves attacked by crawlers and separated.
Rios starts calling for help, alerting the crawlers to her location, but is rescued by Sarah.  The two then watch as a crawler kills Dan and drags his body away, prompting Sarah to inform Rios that the crawlers are blind and hunt via sound. After escaping from and killing a crawler, Cath finds Greg before the two escape from another crawler and find Sam's body. They decide to try to use her to swing across a chasm, but are attacked again. Greg sacrifices himself to buy time for Cath, but she ultimately does not survive.

Output: Who attacks someone, causing the group to split up?


Input: Consider Input: Passage: In 2001, President George W. Bush discussed  an accord with Mexican President Vincente Fox. Possible accord was derailed by the September 11 attacks. From 2005 to 2013, the US Congress discussed various ways of controlling immigration. The Senate and House were unable to reach an agreement.Nearly 14 million immigrants entered the United States from 2000 to 2010, and over one million persons were naturalized as U.S. citizens in 2008. The per-country limit applies the same maximum on the number of visas to all countries regardless of their population and has therefore had the effect of significantly restricting immigration of persons born in populous nations such as Mexico, China, India, and the Philippines—the leading countries of origin for legally admitted immigrants to the United States in 2013; nevertheless, China, India, and Mexico were the leading countries of origin for immigrants overall to the United States in 2013, regardless of legal status, according to a U.S. Census Bureau study. As of 2009, 66% of legal immigrants were admitted on the basis of family ties, along with 13% admitted for their employment skills and 17% for humanitarian reasons.Nearly 8 million people immigrated to the United States from 2000 to 2005; 3.7 million of them entered without papers.  In 1986 president Ronald Reagan signed immigration reform that gave amnesty to 3 million undocumented immigrants in the country. Hispanic immigrants suffered job losses during the late-2000s recession, but since the recession's end in June 2009, immigrants posted a net gain of 656,000 jobs. Over 1 million immigrants were granted legal residence in 2011.For those who enter the US illegally across the Mexico–United States border and elsewhere, migration is difficult, expensive and dangerous. Virtually all undocumented immigrants have no avenues for legal entry to the United States due to the restrictive legal limits on green cards, and lack of immigrant visas for low-skilled workers. Participants in debates on immigration in the early twenty-first century called for increasing enforcement of existing laws governing illegal immigration to the United States, building a barrier along some or all of the 2,000-mile (3,200 km) Mexico-U.S. border, or creating a new guest worker program. Through much of 2006 the country and Congress was immersed in a debate about these proposals. As of April 2010 few of these proposals had become law, though a partial border fence had been approved and subsequently canceled.


Output: What two countries had a possible accord that was derailed by the September 11 attacks?