TASK DEFINITION: In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
PROBLEM: Passage: Five men, criminals Ray, Dave, Stevie, Julian ("Julie" as a nickname), and Jason, plan a heist to steal a minimum of £2 million. Using a truck modified as a battering ram, the group break into a security depot in London and steal a large amount of money before the police arrive. However, they discover they barely got the amount of money they wanted, and only £68,000 to each man. Julian demands an extra amount of money as "expenses" for his work, but is beaten and placed in the boot of Ray's car until he just accepts his share. The group, without Julian, later spend time at a bar with fellow criminal Sonny, and Ray's girlfriend Connie, a protester. Ray and Stevie also visit an elderly couple, Linda and Bill, where they leave their stolen money for safekeeping.
The next day, Ray and Stevie, who live together with Connie, are alerted by a bruised Dave that his money was stolen, apparently by Julian. Ray, Dave and Stevie investigate Linda and Bill's home to find them murdered and the money stolen, leaving Ray emotionally distraught. He visits Julian but his money is missing too. They conclude that Sonny stole the money and break into his house, only to find Jason dead with a headwound. The four are alerted to a pair of undercover police officers and flee, Dave and Julian engaging in a shootout with the police. Believing that he may be arrested for murder, Ray decides to flee after the money is found, and goes to his mother and Connie for help. His mother gives him some money and her car to use, disappointed in her son's career but still caring for him. Ray then speaks with Connie and asks her to come with him, and to meet her at a roadside service station on the M1 if she decides to come.

SOLUTION: Who is placed in the car of the person that is in a relationship with a protester?

PROBLEM: Passage: Gloria Fuentes is a Latin-American makeup artist from Los Angeles who goes on a trip to visit her best friend Suzu in Tijuana, Mexico. 
When the pair go to a local night club, Suzu wants to impress to help her chances in a beauty competition she has entered. When Gloria goes to the bathroom, armed gunmen break in through the vents and attempt to kidnap Gloria out of her stall but ultimately give her time to escape while they attack the building. The next morning, Gloria is unable to get contact from Suzu and decides to ride with a police officer to try to find her. When the officer takes a break, Gloria is taken by members of the Las Estrellas gang, the same men who shot up the club. 
The gang take her to their headquarters, where Lino, the boss, agrees to help her find her friend if she agrees to work for them. Gloria is reluctant but eventually agrees and is told to get into a car and park it on a corner. Gloria does the job, and when she leaves the car and joins the men at the top of the hill, they blow up the building, revealed to be a DEA Safehouse containing three agents. 
Lino then sends Gloria to the Miss Baja California pageant, where she attempts an escape through the bathroom. Gloria escapes and encounters a DEA officer who takes her into custody and eventually lets her go but not before he puts a tracking device on her since the DEA are aiming to monitor Las Estrellas.
Gloria returns to the gang and is sent to San Diego with blood money and drugs attached to her car. Upon crossing the border Gloria is given an arsenal of guns to bring back to Mexico by a gangster named Jimmy, and then told to meet in a large parking lot. Gloria gets to the lot, and the men in Las Estrellas get their weapons. However the police show up, and Lino runs to seize Gloria but is shot in the leg, and Gloria helps him to safety.

SOLUTION: Who is the makeup artist looking for when she is taken by the gang?

PROBLEM: Passage: Telephone services are widely available, and a central digital trunk line connects most regions. Vivacom (BTC) serves more than 90% of fixed lines and is one of the three operators providing mobile services, along with A1 and Telenor. Internet penetration stood at 61.9% of the population aged 16–74, in 2017.Bulgaria's strategic geographic location and well-developed energy sector make it a key European energy centre despite its lack of significant fossil fuel deposits. Thermal power plants generate 48.9% of electricity, followed by nuclear power from the Kozloduy reactors (34.8%) and renewable sources (16.3%). Equipment for a second nuclear power station at Belene has been acquired, but the fate of the project remains uncertain. Installed capacity amounts to 12,668 MW, allowing Bulgaria to exceed domestic demand and export energy.The national road network has a total length of 19,512 kilometres (12,124 mi), of which 19,235 kilometres (11,952 mi) are paved. Railroads are a major mode of freight transportation, although highways carry a progressively larger share of freight. Bulgaria has 6,238 kilometres (3,876 mi) of railway track and currently a total of 81 kilometres (50 miles) of high-speed lines are in operation. Rail links are available with Romania, Turkey, Greece, and Serbia, and express trains serve direct routes to Kiev, Minsk, Moscow and Saint Petersburg. Sofia and Plovdiv are the country's air travel hubs, while Varna and Burgas are the principal maritime trade ports.

SOLUTION:
What is the name of the country whose air travel hubs are Sofia and Plovdiv?