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: Roy DuBro and Ed Klingbottom are garbage men who are constantly undermined by their corrupt boss Junior Assistant Dispatcher Trainee Stanley Snyder.
One day, the earth is secretly invaded by an army of flying saucers, commanded by a Darth Vader-esque alien called Glaxxon. A saucer abducts the two men and the aliens on board attempt to vivisect them. They awaken just in time and escape back to earth with an alien fire extinguisher. When they arrive late for work and try to tell Stanley about the aliens, he doesn't believe them, having heard every alien story ever from fellow worker Old Bob.
President Smith and his significantly more competent press secretary receive news about the invasion from General Vice and the President tells his advisor, Dr. Strangemeister, to find two people with alien experience and make them into secret agents. Unbeknownst to anyone, Strangemeister is secretly in league with Glaxon, who is infuriated by Ed and Roy's interference. Strangemeister hires the two of them, believing that they are destined to fail and transforms them into 'The Men in White'.
The aliens start abducting people all over the world. Roy suggests the two of them use a cow as bait. The plan works and they successfully capture an alien spaceship. They discover  a device that makes them forget the last several seconds, and the two of them get stuck in a continuous loop for several hours until its batteries run down. 
Question: Who hires the garbage men who work for a corrupt boss as secret agents??
Example Output: Dr. Strangemeister.

Example Input: Passage: Tom Stansfield is a researcher at a publishing company who works under the tyrannical Jack Taylor. Tom has a crush on his boss' daughter, Lisa, who is completely controlled by her overprotective father. She reveals to Tom that her father is making her house-sit the same night as a party she wants to attend, but Tom convinces her to stand up to her father and attend the party anyway. Lisa asks him to come to their house that night, leading Tom to think that she has invited him to the party; in reality, she just wants him to fill in for her - he reluctantly agrees.
A comedy of errors ensues, including the return of Lisa's older brother, Red, on the run from drug dealers. Red dumps drugs into the toilet, and instead returns a bag of flour to the drug dealer. One of Tom's tasks is to guard their owl, O-J, which lives in an open cage (it has not been able to fly due to a deep depression, from the loss of a prior mate). When the bird drinks from the toilet polluted with drugs, it flies away. Jack's ex-secretary Audrey goes to the house to try to earn her job back. After fighting with her boyfriend, she stays over at the house.
Lisa returns home after finding out that her boyfriend Hans is cheating on her. Tom hides from her everything that happened and she spends some time with her thinking he is homosexual. He clarifies to her that he's actually straight and she starts to like him. Audrey's friend thinks she has breast cancer and asks Tom to feel her breasts. Lisa walks in on them and is disgusted by the situation. 
Question: How does Audrey know Red's father?
Example Output: ex-secretary.

Example Input: Passage: Harry Glicken (March 7, 1958 – June 3, 1991) was an American volcanologist. He researched Mount St. Helens in the United States before and after its 1980 eruption, and was very distraught about the death of fellow volcanologist David A. Johnston, who had switched shifts with Glicken so that the latter could attend an interview. In 1991, while conducting avalanche research on Mount Unzen in Japan, Glicken and fellow volcanologists Katia and Maurice Krafft were killed by a pyroclastic flow. His remains were found four days later, and were cremated in accordance with his parents' request. Glicken and Johnston remain the only American volcanologists known to have died in volcanic eruptions.
Despite a long-term interest in working for the United States Geological Survey, Glicken never received a permanent post there because employees found him eccentric. Conducting independent research from sponsorships granted by the National Science Foundation and other organizations, Glicken accrued expertise in the field of volcanic debris avalanches. He also wrote several major publications on the topic, including his doctoral dissertation based on his research at St. Helens titled "Rockslide-debris Avalanche of May 18, 1980, Mount St. Helens Volcano, Washington" that initiated widespread interest in the phenomenon. Since being published posthumously by Glicken's colleagues in 1996, the report has been acknowledged by many other publications on debris avalanches. Following his death, Glicken was praised by associates for his love of volcanoes and commitment to his field. 
Question: What is the last name of the person who researched Mount St. Helens before and after its 1980 eruption?
Example Output:
Glicken.