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 Input:
Passage: On a train trip, lawyer Richard Grant tells fellow passengers that, based on his long experience both prosecuting and defending murder cases, murder is sometimes justified and a clever man should be able to commit it undetected. He is traveling to the isolated estate of his wealthy client and friend, Gordon Rich; his young adult daughter Barbara surprises him at the train station, where she informs him that she has already been there a week.
Grant's view is soon put to the test. Rich asks him to rewrite his will, including bequests to all his former mistresses (except one who is dead already; she was just 16, and Grant believes it was suicide). When Rich explains that he wants a new will because he intends to marry Barbara, Grant is appalled. He repeats what he said on the train. Rich deserves to be murdered, and if that is what it takes to stop the marriage, Grant will do it and get away with it. Rich retorts that if necessary he will retaliate from beyond the grave.
Grant pleads with his daughter, pointing out the great age difference and Rich's indecent character. But she loves Rich and is adamant. Nor has Tommy Osgood, a young man Barbara had been seeing, been able to change her mind.
At a dinner party that night, Rich announces the wedding and says it will take place in the morning. His longtime girlfriend, Marjorie West, is dismayed, but after the party he assures her that, as usual, he will return to her once he exhausts his obsession with Barbara. He is only marrying Barbara because she would not go to bed with him otherwise.
Rich orders two servants to watch Grant's bungalow on the estate, but Grant uses a cutout mounted on a record player to cast a moving shadow on the curtain to make it appear that he is pacing restlessly, and slips back to the main house. Meanwhile, Rich goes to Barbara's room. He loses control and grabs her roughly; she recoils in disgust and he leaves. 
Question: What is the full name of the person who is surprised by someone at the train station?

Ex Output:
Richard Grant.


Ex Input:
Passage: Tuesday, 4 September was the day of greatest destruction. The Duke of York's command post at Temple Bar, where Strand meets Fleet Street, was supposed to stop the fire's westward advance towards the Palace of Whitehall. He hoped that the River Fleet would form a natural firebreak, making a stand with his firemen from the Fleet Bridge and down to the Thames. However, early on Tuesday morning, the flames jumped over the Fleet and outflanked them, driven by the unabated easterly gale, forcing them to run for it. There was consternation at the palace as the fire continued implacably westward; "Oh, the confusion there was then at that court!" wrote Evelyn.
Working to a plan at last, James's firefighters had also created a large firebreak to the north of the conflagration. It contained the fire until late afternoon, when the flames leapt across and began to destroy the wide affluent luxury shopping street of Cheapside.
Everybody had thought St. Paul's Cathedral a safe refuge, with its thick stone walls and natural firebreak in the form of a wide empty surrounding plaza. It had been crammed full of rescued goods and its crypt filled with the tightly packed stocks of the printers and booksellers in adjoining Paternoster Row. However, the building was covered in wooden scaffolding, undergoing piecemeal restoration by Christopher Wren, who was relatively unknown then. The scaffolding caught fire on Tuesday night.
Leaving school, young William Taswell stood on Westminster Stairs a mile away and watched as the flames crept round the cathedral and the burning scaffolding ignited the timbered roof beams. Within half an hour, the lead roof was melting, and the books and papers in the crypt caught with a roar. "The stones of Paul's flew like grenados," reported Evelyn in his diary, "the melting lead running down the streets in a stream, and the very pavements glowing with fiery redness, so as no horse, nor man, was able to tread on them." The cathedral was quickly a ruin.
In St.Paul's, falling heavy masonry broke through into its crypt, where booksellers had stored huge stocks of books, and all were burned.
During the day, the flames began to move eastward from the neighbourhood of Pudding Lane, straight against the prevailing east wind and towards Pepys's home on Seething Lane and the Tower of London with its gunpowder stores. The garrison at the Tower took matters into their own hands after waiting all day for requested help from James's official firemen who were busy in the west. They created firebreaks by blowing up houses on a large scale in the vicinity, halting the advance of the fire. In a letter to William Coventry, Pepys wrote that he "saw how horribly the sky looks, all on a fire in the night, was enough to put us out of our wits; and, indeed, it was extremely dreadful, for it looks just as if it was at us, and the whole heaven on fire.". 
Question: What is the last name of person that watched the fires burn around the building that was thought to be a safe refuge?

Ex Output:
Taswell.


Ex Input:
Passage: Zac is a lonely, highly strung city trader on the edge of a psychological breakdown. He has lost everything—his job, his girlfriend Eva (Sophia Di Martino from "Flowers") and, most devastatingly, his weird and wayward younger sister Alice, the only family he had left. Alice is now a missing person, having disappeared on a narrow boat trip along with her kindred drifter and boyfriend Toby. Zac becomes increasingly frustrated with the futile attempts of the police to find them and, eventually, decides to take matters into his own inexpert hands by starting a terribly executed video blog and scouring the dark canals of the UK in a desperate, perhaps even deluded search for clues. Struggling for information and fast losing hope, Zac reflects on his past and the difficult relationship he had with Alice. Wracked with guilt and regret, his sanity starts to unravel as he fights with memories of her in the weeks leading up to her disappearance. As he remembers her sweetly burgeoning relationship with the mysterious Toby, however, he begins to wonder if there may in fact be a grander, wilder, much stranger explanation for their disappearance. 
Question: Who did Zac's sister have a difficult relationship with?

Ex Output:

Zac.