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.

Example Input: Passage: After struggling with infertility, Anne finally succeeds in getting pregnant through invitro fertilization with her husband Jack. However, one night, Anne awakens to discover a masked intruder in her room. Terrified, Anne tries to escape, but the intruder chloroforms her into unconsciousness, rendering her helpless as he kidnaps her and takes her to an isolated house.
In the morning, Anne finds herself held captive by a couple named Frank and Helen. Helen has gone mad after her baby was aborted by Frank upon learning that it would have been born deformed. The procedure left her sterile, and he is now attempting to make it up to her by giving her Anne's baby. Anne recognizes Frank as a technician at her fertility clinic, and Helen later tells her that he secretly replaced her fertilized egg with one of Helen's instead. Frank stages a car accident with a horribly burned body to make everyone believe Anne is dead; Jack refuses to accept it and pressures the police to continue investigating, but after several months they dismiss his ideas. 
Question: What is the name of the character whose fertilized egg was replaced with one of Helen's?
Example Output: Anne.

Example Input: Passage: The film begins in a parking lot in which a teenage filmmaker named Eric is attempting to document the faux-gangsta lifestyle enjoyed by Allison Lang and her boyfriend Toby's (Mike Vogel) gang of white upper-class teenagers living in the Pacific Palisades neighborhood. A brawl ensues between Toby's gang and another gang, which ends with both sides fleeing just before police arrive. Later that night, Toby's gang goes to a party at Eric's house, and Allison's relationship with Toby as well as her other friends Emily and Sam is further revealed. At the end of the party, Allison performs oral sex on her boyfriend.
The next day, Allison meets with her father, Stuart, at work to discuss family problems, the awkward conversation revealing the virtually non-existent relationship Allison has with her parents. Afterwards, she and her friends drive downtown into East LA, intent on buying marijuana, eventually encountering Mexican drug dealer Hector and his crew. Toby and Hector make a deal, but Toby believes that Hector did not sell him enough for what he paid, and attempts to confront Hector, who pulls a gun on him, humiliating him in front of his friends. Allison persuades Hector to leave Toby alone. 
Question: Where do the gangs have a brawl?
Example Output: parking lot.

Example Input: Passage: Lennon met Cynthia Powell (1939–2015) in 1957, when they were fellow students at the Liverpool College of Art. Although Powell was intimidated by Lennon's attitude and appearance, she heard that he was obsessed with the French actress Brigitte Bardot, so she dyed her hair blonde. Lennon asked her out, but when she said that she was engaged, he screamed out, "I didn't ask you to fuckin' marry me, did I?" She often accompanied him to Quarrymen gigs and travelled to Hamburg with McCartney's girlfriend to visit him. Lennon was jealous by nature and eventually grew possessive, often terrifying Powell with his anger and physical violence. Lennon later said that until he met Ono, he had never questioned his chauvinistic attitude toward women. He said that the Beatles song "Getting Better" told his own story, "I used to be cruel to my woman, and physically – any woman. I was a hitter. I couldn't express myself and I hit. I fought men and I hit women. That is why I am always on about peace."Recalling his July 1962 reaction when he learned that Cynthia was pregnant, Lennon said, "There's only one thing for it Cyn. We'll have to get married." The couple wed on 23 August at the Mount Pleasant Register Office in Liverpool, with Brian Epstein serving as best man. His marriage began just as Beatlemania was taking off across the UK. He performed on the evening of his wedding day and would continue to do so almost daily from then on. Epstein feared that fans would be alienated by the idea of a married Beatle, and he asked the Lennons to keep their marriage secret. Julian was born on 8 April 1963; Lennon was on tour at the time and did not see his infant son until three days later.Cynthia attributed the start of the marriage breakdown to Lennon's use of LSD, and she felt that he slowly lost interest in her as a result of his use of the drug. When the group travelled by train to Bangor, Wales in 1967 for the Maharishi Yogi's Transcendental Meditation seminar, a policeman did not recognise her and stopped her from boarding. She later recalled how the incident seemed to symbolise the end of their marriage. After Cynthia arrived home at Kenwood, she found Lennon with Ono and left the house to stay with friends. Alexis Mardas later claimed to have slept with her that night, and a few weeks later he informed her that Lennon was seeking a divorce and custody of Julian on the grounds of her adultery with him. After negotiations, Lennon capitulated and agreed to let her divorce him on the same grounds. The case was settled out of court in November 1968, with Lennon giving her £100,000 ($240,000 in US dollars at the time), a small annual payment and custody of Julian. 
Question: What is the last name of the person who married Lennon?
Example Output:
Powell.