In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it. Your job is to determine which sentence(s) from the passage can be used to search for further information needed to answer the question.

[EX Q]: Question: What year did Philby defect? Passage:In May 1986, Souther requested Soviet citizenship, aware that the investigation against him was progressing. In June, fearing imminent arrest, Souther defected to the Soviet Union by flying from the United States to Rome, where the Soviet intelligence services transferred him to Moscow. Initially, Soviet counterintelligence units were suspicious of Souther's defection and feared that he was a double agent for the CIA, but he was cleared shortly afterwards. On 2 October 1986, Souther was granted Soviet citizenship in a decree from the Presidium of the Supreme Soviet, and adopted the Russian name Mikhail Yevgenyevich Orlov. Souther was well-received by the Soviet authorities, gifting him an apartment in Moscow and a dacha on the outskirts of the city, and promoting him to the rank of major in the KGB one of few foreign spies to be commissioned as an officer in the agency. Souther became actively engaged in scientific activities, developed his own English teaching program, walked around Moscow a lot, and travelled to other Soviet cities. Souther met and befriended other foreign Soviet intelligence agents that had defected including Kim Philby and George Blake. Souther married a Russian woman named Elena, an English teacher at the Intelligence Institute, and they had a daughter named Alexandra. In early 1989, Souther was awarded an Order of Friendship of Peoples for his contributions in the intelligence services following a petition from the KGB leadership.

[EX A]: Souther met and befriended other foreign Soviet intelligence agents that had defected including Kim Philby and George Blake

[EX Q]: Question: What were the main groups involved in the event that resulted in the sacking of Constantinople in 1204? Passage:Papal calls for renewed holy war at the end of the twelfth century inspired not only the disastrous Fourth Crusade that sacked Constantinople in 1204, but also a series of simultaneous "Northern Crusades" that are less fully covered in English-language popular history, but which were more successful in the long run. Before the crusades, the region of Livonia was a mixed outpost, a pagan society where merchants from the Hanseatic League encountered merchants of Novgorod, and where Germanic, Scandinavian, and Russian trade, culture, and cults all mingled. The specific ethnic groups that intermingled and traded with the Germans, Danish, Swedish, and Russians here included the Wends, who were merchants from Lubeck, the Estonians, the Karelians, the Kuronians, the Lettgallians, the Semgallians (sometimes known as the Letts), the Livonians and the Lithuanians. The Western merchants would trade silver, textiles, and other luxury goods for furs, beeswax, honey, leather, dried fish, and amber. Livonia had been an especially promising location in terms of resources, and Arnold of Lubeck, in his Chronicle of the Slavs wrote that the land was "abundant in many riches" and was "fertile in fields, plentiful in pastures, irrigated by rivers", and "also sufficiently rich in fish and forested with trees".

[EX A]: Papal calls for renewed holy war at the end of the twelfth century inspired not only the disastrous Fourth Crusade that sacked Constantinople in 1204, but also a series of simultaneous "Northern Crusades" that are less fully covered in English-language popular history, but which were more successful in the long run

[EX Q]: Question: On what network did Applegate play a policeman's daughter in 1986? Passage:Applegate was born in Hollywood, California. Her father, Robert William "Bob" Applegate, was a record producer and record company executive, and her mother, Nancy Lee Priddy, is a singer and actress. Her parents were separated shortly after her birth. She has two half-siblings (Alisa and Kyle) from her father's second marriage. After her parents' divorce, her mother had a relationship with musician Stephen Stills. After her television debut with her mother in the soap opera Days of Our Lives and a commercial for Playtex baby bottles at 3 and 5 months, respectively, Applegate made her film debut in the 1981 film Jaws of Satan (or King Cobra), followed by 1981's Beatlemania. She debuted in a television movie as young Grace Kelly in the biopic Grace Kelly (1983) and appeared in her first TV series in Showtime's political comedy Washingtoon (1985), in which she played a congressman's daughter. She was also seen as a guest in the shows Father Murphy (1981), Charles in Charge (1984 and 1985), and Silver Spoons (1986). In 1986 Applegate won the role of Robin Kennedy (198687), a policeman's daughter, in the police drama series Heart of the City. Meanwhile, she was also seen guest-starring in several other television series such as All is Forgiven, Still the Beaver, Amazing Stories, and the Family Ties episode "Band on the Run" (1987) as Kitten.

[EX A]:
In 1986 Applegate won the role of Robin Kennedy (198687), a policeman's daughter, in the police drama series Heart of the City