Detailed Instructions: 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.
See one example below:
Problem: Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs. 
Question: Who believes Fagin's gang make wallets and handkerchiefs?
Solution: Oliver.
Explanation: In the sentence "He believes they make wallets and handkerchiefs", the pronoun "he" refers to name "Oliver".

Problem: Passage: On the Greek island of Kalokairi, 20-year-old bride-to-be Sophie Sheridan reveals to her bridesmaids, Ali and Lisa, that she has secretly invited three men to her wedding without telling her mother, Donna. They are the men that her mother's diary reveals could have been her father: Irish-American architect Sam Carmichael, Swedish adventurer and writer Bill Anderson, and British banker Harry Bright. She dreams of being given away by her father at her wedding, and believes that after she spends time with them she will know which is her father.
Sophie's mother Donna, who owns a villa and runs it not very successfully as a hotel, is ecstatic to reunite with her former Dynamos bandmates, wisecracking author Rosie Mulligan and wealthy multiple divorcée Tanya Chesham-Leigh, and reveals her bafflement at her daughter's desire to get married. Donna shows off the villa to Rosie and Tanya. The three men arrive and Sophie smuggles them to their room. She doesn't reveal that she believes one of them is her father, but does explain that she and not her mother sent the invitations. She begs them to hide so Donna will be surprised by the old friends of whom she "so often" favorably speaks. They overhear Donna working and swear not to reveal Sophie's secret.
Donna spies them and is dumbfounded to find herself facing former lovers, demanding they leave. She confides in Tanya and Rosie that she truly does not know which of the three fathered Sophie. Tanya and Rosie rally her spirits by getting her to dance with an all female ensemble of staff and islanders. Sophie finds the men aboard Bill's yacht, and they sail around Kalokairi, telling stories of Donna's carefree youth. Sophie plans to tell her fiancé Sky about her ploy, but loses her nerve. Sky and Sophie sing to each other, but Sky is abducted for his bachelor party. 
Question: Who might have been Sophie's father?
Solution:
Sam Carmichael,.