Given the task definition and input, reply with output. In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).

Context: The Kalinin Front was a major formation of the Red Army active in the Eastern Front of World War II. It was formally established by Stavka directive on 17 October 1941 and allocated three armies: 22nd, 29th Army and 30th. In May 1942, the Air Forces of the Kalinin Front were reorganised as the 3rd Air Army, comprising three fighter, two ground attack, and one bomber division., The United States dropped nuclear weapons on the Japanese cities of Hiroshima and Nagasaki on August 6 and 9, 1945, respectively, during the final stage of World War II. The United States had dropped the bombs with the consent of the United Kingdom as outlined in the Quebec Agreement. The two bombings, which killed at least 129,000 people, remain the only use of nuclear weapons for warfare in history., Andrey (Andrei) Ivanovich Yeryomenko (or Yeremenko, Eremenko ; November 19, 1970) was a Soviet general during World War II and, subsequently, a Marshal of the Soviet Union., World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although related conflicts began earlier. It involved the vast majority of the world's nationsincluding all of the great powerseventually forming two opposing military alliances: the Allies and the Axis. It was the most widespread war in history, and directly involved more than 100 million people from over 30 countries. In a state of "total war", the major participants threw their entire economic, industrial, and scientific capabilities behind the war effort, erasing the distinction between civilian and military resources. Marked by mass deaths of civilians, including the Holocaust (in which approximately 11 million people were killed) and the strategic bombing of industrial and population centres (in which approximately one million were killed, and which included the atomic bombings of Hiroshima and Nagasaki), it resulted in an estimated 50 million to 85 million fatalities. These made World War II the deadliest conflict in human history., The Soviet Army is the name given to the main land-based branch of the Soviet Armed Forces between February 1946 and December 1991, when it was replaced with the Russian Ground Forces, although it was not taken fully out of service until 25 December 1993. Until 25 February 1946, it was known as the Red Army, established by decree on 15 (28) January 1918 "to protect the population, territorial integrity and civil liberties in the territory of the Soviet state." It had 2.4 million men under its service during the Cold War., The Siege of Leningrad, also known as the Leningrad Blockade (transliteration: "blokada Leningrada") was a prolonged military blockade undertaken mainly by the German Army Group North against Leningrad, historically and currently known as Saint Petersburg, in the Eastern Front theatre of World War II. The siege started on 8 September 1941, when the last road to the city was severed. Although the Soviets managed to open a narrow land corridor to the city on 18 January 1943, the siege was only lifted on 27 January 1944, 872 days after it began. It was one of the longest and most destructive sieges in history and possibly the costliest in terms of casualties., Mariya Ivanivna Dolina ( Ukrainian :    , Russian :    Mariya Ivanovna Dolina ; December 18 , 1922 -- March 3 , 2010 ) was a Soviet pilot , deputy and acting squadron commander of the 125th `` Marina M. Raskova '' Borisov Guards Bomber Regiment . She was active primarily on the 1st Baltic Front during World War II. On August 18 , 1945 Dolina was awarded the Hero of the Soviet Union ., Hiroshima is perhaps best known as the first city in history to be targeted by a nuclear weapon when the United States Army Air Forces (USAAF) dropped an atomic bomb on the city (and later on Nagasaki) at 8:15 a.m. on August 6, 1945, near the end of World War II., During World War II, the American atomic bombings of Hiroshima and Nagasaki made Nagasaki the second and, to date, last city in the world to experience a nuclear attack., The First Baltic Front was a major formation of the Soviet Army during the Second World War. It was commanded by Army General Andrey Yeryomenko, succeeded by Army General Bagramyan. It was formed by renaming the Kalinin Front in October 12, 1943 and took part in several important military operations, most notably Bagration in the summer of 1944. The 1st Baltic Front also assisted in lifting the Siege of Leningrad on January 27, 1944 as well as in Operation Samland, at that time known as the Samland Group, captured Königsberg in April 1945., Subject: mariya dolina, Relation: conflict, Options: (A) atomic bombings of hiroshima and nagasaki (B) cold war (C) eastern front (D) siege of leningrad (E) world war (F) world war ii
eastern front