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 Q]: Passage: As the national media descended on Beach Haven, Spring Lake, and Matawan, the Jersey Shore attacks started a shark panic. According to Capuzzo, this panic was "unrivaled in American history," "sweeping along the coasts of New York and New Jersey and spreading by telephone and wireless, letter and postcard." At first, after the Beach Haven incident, scientists and the press reluctantly blamed the death of Charles Vansant on a shark. The New York Times reported that Vansant "was badly bitten in the surf ... by a fish, presumably a shark." Still, State Fish Commissioner of Pennsylvania and former director of the Philadelphia Aquarium James M. Meehan asserted in the Philadelphia Public Ledger that the shark was preying on the dog, but bit Vansant by mistake. He specifically de-emphasized the threat sharks posed to humans:
Despite the death of Charles Vansant and the report that two sharks having been caught in that vicinity recently, I do not believe there is any reason why people should hesitate to go in swimming at the beaches for fear of man-eaters. The information in regard to the sharks is indefinite and I hardly believe that Vansant was bitten by a man-eater. Vansant was in the surf playing with a dog and it may be that a small shark had drifted in at high water, and was marooned by the tide. Being unable to move quickly and without food, he had come in to bite the dog and snapped at the man in passing.
The media's response to the second attack was more sensational. Major American newspapers such as the Boston Herald, Chicago Sun-Times, The Philadelphia Inquirer, The Washington Post and San Francisco Chronicle placed the story on the front page. The New York Times' headline read, "Shark Kills Bather Off Jersey Beach". The growing panic had cost New Jersey resort owners an estimated $250,000 ($5,800,000 in 2018) in lost tourism, and sun bathing had declined by 75 percent in some areas. A press conference was convened on July 8, 1916, at the American Museum of Natural History with scientists Frederic Augustus Lucas, John Treadwell Nichols, and Robert Cushman Murphy as panelists. To calm the growing panic, the three men stressed that a third run in with a shark was unlikely, although they were admittedly surprised that sharks bit anyone at all. Nevertheless, Nichols—the only ichthyologist in the trio—warned swimmers to stay close to shore and to take advantage of the netted bathing areas installed at public beaches after the first attack. 
Question: What are the full names of the three men who were admittedly surprised that sharks bit anyone at all?
[EX A]: Frederic Augustus Lucas.

[EX Q]: Passage: The white-naped xenopsaris (Xenopsaris albinucha), also known as the reed becard and white-naped becard, is a species of suboscine bird in the family Tityridae, the only member of the genus Xenopsaris. It is found in South America, in humid subtropical and tropical savanna climates in most of the countries east of the Andes: Venezuela, Brazil, Bolivia, Paraguay, Uruguay, and Argentina. Living in open woodland and other open forest habitats, it is mostly sedentary, though some populations may be migratory. The species, which is closely related to becards and tityras, was thought to be either a tyrant-flycatcher or cotinga, before it was placed in Tityridae.
The bird is 12.5 to 13 cm (4.9–5.1 in) in length, with whitish undersides, a black crown, and grey-brown upperparts. The sexes are similar in appearance, though the females have duller upperparts. It feeds on insects in the foliage of trees and bushes, and sometimes on the ground. Nesting occurs in a simple cup nest placed in the fork of a tree. Both parents incubate the eggs and help feed the chicks. When the chicks fledge, the parents may divide up the brood to continue helping. The species is not common and little is known about it, but it is not considered in danger of extinction, and has been classified as of least concern by the International Union for Conservation of Nature. 
Question: What is the scientific name of the animal that is 12.5 to 13 cm?
[EX A]: Xenopsaris albinucha.

[EX Q]: Passage: Three years after the events of the previous film, ex-CIA operative Frank Moses tries to lead a normal life with girlfriend Sarah Ross. He dismisses Marvin Boggs' claims that enemies are still after them; Marvin drives off and his car explodes. Although Frank is unconvinced Marvin is dead, Sarah convinces him to attend Marvin's funeral where he delivers a tearful eulogy. Government agents interrogate Frank at an FBI Yankee White facility. Corrupt agent Jack Horton and a team of private military contractors ambush the facility; he threatens to torture Sarah until Frank gives him the information he needs. Frank evades Horton, and with the help of the still living Marvin, goes on the run with Sarah.
Marvin explains he and Frank have been targeted as members of Operation Nightshade, a clandestine operation during the Cold War to smuggle a nuclear weapon into Russia. Horton convinces international agencies that Frank and his associates are terrorists on the run. Frank's old ally Victoria notifies him that she has been contracted by MI6 to kill the fugitives. Another top contract killer, Han Cho-Bai, is also hired, seeking revenge against Frank.
Frank, Marvin, and Sarah steal Han's plane and fly to Paris to find "The Frog", with the Americans and Han in pursuit. They are met by Katja Petrokovich, a Russian secret agent with whom Frank had a relationship, who is also investigating Nightshade. They interrogate the Frog and Sarah, hoping to one-up Katja, seduces him. 
Question: Who is Ketja Petrokovich interrogating?
[EX A]:
Nightshade.