In this task, you're expected to write answers to questions involving multiple references to the same entity. The answer to the question should be unambiguous and a phrase in the paragraph. Most questions can have only one correct answer.

[EX Q]: Passage: The film begins at Heathrow Airport, where a Polish immigrant named Lena Malley is working a shift as a cleaner. While there, her colleague Birdie helps her to clean the toilets. The two begin to talk and Lena reveals that she lives alone and doesn't keep in touch with her family. Birdie introduces Lena to her adopted brother Elbie, who also works at the airport and is a mute. Lena tells Birdie that she doesn't get on with her family. While talking, Lena notices scars on Birdie's arm; Birdie explains that she used to have behavioral problems; but that she's better now. At the end of the shift Lena misses her bus so Birdie tells her that her dad will drive Lena home if they walk to Birdie's house.
Upon arriving at the house Lena is knocked out from behind and injected with a syringe. She wakes up tied to a chair to the sound of screaming coming from another room. Moments later Mum and Dad enter the room and introduce themselves. Mum tells Lena that if she does what she is told everything will be ok. Lena is unable to respond because of the injection she received earlier and Mum proceeds to inject her with a sedative. When she wakes up again Mum begins carving marks into her back. 
Lena is unable to speak, and Mum tells her to not try to talk. She gives Lena another injection, and Lena falls asleep. She wakes up later, tied to a frame. Mum tells her that she wanted another girl to come and live there. Mum then pierces Lena's skin with some metal and carves some marks into her back. Following this incident Lena is taken to see Dad who tells her that in his house she will follow his rules
At breakfast, the family are watching pornography. Lena makes an escape attempt but Dad grabs her and Elbie drags her back to the table. 
Question: Who walks to Birdie's house?
[EX A]: Birdie.

[EX Q]: Passage: In 1933, a child orphaned during the Ukrainian Holodomor runs away from his orphanage and is taken in by a Red Army unit and adopted by its kindly commander, who gives him the name Leo Demidov. In 1945, now a sergeant with the unit, Leo  becomes an icon across the Soviet Union when he is photographed planting the Soviet flag atop the Reichstag during the Battle of Berlin. He becomes a Hero of the Soviet Union.
In 1953, Leo, now married to Raisa and living in Moscow, is a captain in the Ministry of State Security, commanding a unit tasked with tracking down and arresting dissidents. They arrest a veterinarian, Anatoly Brodsky, and during the arrest, one of Leo's subordinates, the cowardly but ambitious Vasili Nikitin, shoots a farmer, Semyon Okun, and his wife in whose barn Brodsky has been hiding, orphaning their two young daughters. Angry, Leo strikes Vasili, who harbours growing resentment against Leo and the other officer in the unit, Alexei Andreyev; all three were in Berlin together in 1945. Vasili is in charge of Brodsky's interrogation and execution, and one of the names he gives to their superior, Major Kuzmin, is that of Raisa, a primary school teacher, several of whose colleagues have recently been arrested for dissident views. Kuzmin orders Leo to investigate his own wife.
Meanwhile, Alexei's young son, Jora, is found dead near a railway yard. Although the initial pathology report shows injuries consistent with torture, the surgically precise removal of organs, and drowning, the authorities declare that he was hit by a train, as Stalin has decreed that murder is a capitalist disease; there is no murder in a communist paradise. Alexei is forced to accept the official conclusions to save himself and the rest of his family. 
Question: What is the profession of the man that the person in Leo's unit interrogates?
[EX A]: veterinarian.

[EX Q]: Passage: Slayer is an American thrash metal band from Huntington Park, California. The band was formed in 1981 by vocalist and bassist Tom Araya and guitarists Kerry King and Jeff Hanneman. Slayer's fast and aggressive musical style made them one of the founding "big four" bands of thrash metal, alongside Metallica, Megadeth and Anthrax. Slayer's current lineup comprises King, Araya, drummer Paul Bostaph and guitarist Gary Holt. Hanneman and drummers Dave Lombardo and Jon Dette are former members of the band.
In the original line-up, King, Hanneman and Araya contributed to the band's lyrics, and all of the band's music was written by King and  Hanneman. The band's lyrics and album art, which cover topics such as murder, serial killers, necrophilia, torture, genocide, human experimentation, Satanism, hate crimes, terrorism, religion, antireligion, Nazism and war, have generated album bans, delays, lawsuits and criticism from religious groups and factions of the general public. However, its music has been highly influential, often being cited by many bands as an influence musically, visually and lyrically; the band's third album, Reign in Blood (1986), was described as one of the heaviest and most influential thrash metal albums.
Slayer has released twelve studio albums, two live albums, a box set, six music videos, two extended plays and a cover album. Four of the band's studio albums have received gold certification in the United States. The band has received five Grammy Award nominations, winning one in 2007 for the song "Eyes of the Insane" and one in 2008 for the song "Final Six", both of which were from the album Christ Illusion (2006). Between 1991 and 2013, the band sold five million albums in the United States. After 37 years of recording and performing, Slayer announced in January 2018 that they would embark on their final world tour, which began that May and is estimated to wrap up in 2019 or 2020. 
Question: What are the first names of the two individuals who, along with drummer Paul Bostaph and guitarist Gary Holt, comprise Slayer's current line-up?
[EX A]:
Kerry.