instruction:
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.
question:
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?
answer:
veterinarian.


question:
Passage: Hotshot ensign Alan Drake, fresh from the flying academy at Pensacola, Florida, gets off to a bad start with the pilots of an elite squadron, nicknamed the "Hellcats", to which he has been posted in San Diego. Making a nearly disastrous landing attempt in heavy fog against orders and disqualifying the squadron during a competitive shooting exercise by colliding with the target drogue does not endear him to his fellow pilots. He also asks out a woman he has met, Lorna, not knowing that she is the squadron commander Billy Gary's (Walter Pidgeon) wife.
However, Drake is earnest and contrite. He mixes with the Hellcats at the Garys' large house, which the sociable couple have opened as an unofficial officers' club. His flying and his social errors are forgiven, and his fellow pilots accept him, nicknaming him "Pensacola". 
Drake further proves himself when he helps Lieutenant Jerry Banning solve a problem in a blind-landing apparatus he is developing. Just after Commander Gary is sent out of town on assignment, Banning decides the apparatus is ready to test in fog — but it fails and Banning is killed. Working with Banning's assistant, Drake soon identifies the problem, but no further testing is allowed until Commander Gary's return.
Banning had been a childhood friend of Lorna Gary, and is not her first friend to die. She sinks into a deep depression. She also knows that Gary will expect her to hide her feelings and carry on, something that is very much not in her nature. Drake, appreciating the help the Garys gave him when he arrived, visits her at her home, and convinces her she should not suffer alone. They go for walks, drives, and tennis; he amuses her with jokes. Finally, at a restaurant she reaches for his hand and in doing so realizes she is falling for him. She quickly breaks away, and says she cannot see him any more. 
Question: What is the last name of the person whose hand Lorna reaches for and realizes she is falling for?
answer:
Drake.


question:
Passage: In Depression-era North Carolina, George Pemberton is an ambitious timber baron who meets Serena Shaw, a young woman with a sad past. He falls in love with her, they marry, and Serena comes with George to his land. There, she starts taking control of things, pressuring and questioning George, while remaining affectionate towards him.
George's business partner Buchanan feels threatened by her, as she begins to exceed his authority. Things grow worse between George and Buchanan, and Buchanan strikes a deal with the local sheriff, who wants to buy George's land to make a park. George is hurt by Buchanan's betrayal, and Serena convinces George that Buchanan was never his friend.
The next day, they both go shooting alone from the group attempting to flush out a bear. After some snide remarks from Buchanan, George contemplates killing him only to hesitate and be seen by Buchanan. As Buchanan cocks his rifle, George fires first and shoots him in the chest. Campbell, George's worker, witnesses the murder, but denies it when Sheriff McDowell inquires. The death is ruled an accident. Serena consoles George and justifies his actions.
One day, he sees his illegitimate son, Jacob, posing with his mother, Rachel, for a picture. He feels responsible for the boy, and since Rachel never asked for anything, he begins giving sums of money in envelopes to her for Jacob. Serena remains unaware of this, though she does consider Rachel and the baby a threat.
One day, an accident occurs in the forest and Galloway, a mysterious worker, loses his hand to an axe swing. Serena rushes to help him and uses a belt as a tourniquet to stop the bleeding which saves his life. Having problems with her pregnancy, Serena and George rush to the hospital after Serena experiences heavy bleeding and pain. She miscarries. They learn that she can never again bear children. Things continue to grow worse, and Rachel's baby becomes more obvious to Serena. 
Question: What action does Serena, despite considering Rachel and Jacob a threat, remain unaware of?
answer:

giving sums of money in envelopes.