This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

Q: Passage: Prussia emerged from the war as a great power whose importance could no longer be challenged. Frederick the Great’s personal reputation was enormously enhanced, as his debt to fortune (Russia’s volte-face after Elizabeth’s death) and to the British subsidy were soon forgotten while the memory of his energy and his military genius was strenuously kept alive. Russia, on the other hand, made one great invisible gain from the war: the elimination of French influence in Poland. The First Partition of Poland (1772) was to be a Russo-Prussian transaction, with Austria only reluctantly involved and with France simply ignored. Question: What gain did Russia make from the results of the war?

A: Russia, on the other hand, made one great invisible gain from the war: the elimination of French influence in Poland
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Q: Passage: Under the 1963 constitution, Massamba-Débat was elected President for a five-year term. During Massamba-Débat's term in office the regime adopted "scientific socialism" as the country's constitutional ideology. In 1965, Congo established relations with the Soviet Union, the People's Republic of China, North Korea and North Vietnam. Massamba-Débat's regime also invited several hundred Cuban army troops into the country to train his party's militia units and these troops helped his government survive a coup in 1966 led by paratroopers loyal to future President Marien Ngouabi. Nevertheless, Massamba-Débat was unable to reconcile various institutional, tribal and ideological factions within the country and his regime ended abruptly with a bloodless coup d'état in September 1968. Question: What was a term that could describe the political philosophy of the Congo under Massamba-Debat?

A: scientific socialism
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Q: Passage: Treaties are not necessarily permanently binding upon the signatory parties. As obligations in international law are traditionally viewed as arising only from the consent of states, many treaties expressly allow a state to withdraw as long as it follows certain procedures of notification. For example, the Single Convention on Narcotic Drugs provides that the treaty will terminate if, as a result of denunciations, the number of parties falls below 40. Many treaties expressly forbid withdrawal. Article 56 of the Vienna Convention on the Law of Treaties provides that where a treaty is silent over whether or not it can be denounced there is a rebuttable presumption that it cannot be unilaterally denounced unless: Question: Are treaties permanently binding upon the signatory parties?

A:
not necessarily
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