In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.

Example Input: Question: Who created the character with whom the goddess Bast made her first appearance in Fantastic Four #52? Passage:Characters based on ancient Egyptian deities were first mentioned in Captain America Comics #20 (November 1942), published by Marvel Comics' predecessor Timely Comics, in which Captain America and Bucky investigate the murder of Colonel Fitzpatrick, who was studying the Book of Thoth while stationed in Egypt. The Heliopolitans first full Golden Age appearance was in the story "The Terror That Creeps" by Stan Lee and Werner Roth, published in Marvel Tales #96 (June 1950), and involves a man that fails to convince the public that the Great Sphinx of Giza is slowly moving to the edge of the desert, where it will be empowered by Set and destroy mankind. The goddess Bast would later make her first appearance (as a totem) with the Black Panther in Fantastic Four #52 (July 1966). Many of the other deities, including Horus, Isis and Osiris, were introduced in Thor #239 (September 1975). Khonshu, who became associated with Moon Knight, first appeared in Moon Knight #1 (November 1980). Joseph Muszynski argued in his book Everything I Needed to Know About Life I Learned from Marvel Comics that the introduction of Egyptian deities "excited our tendency to enjoy variety" as the pantheon contained multiple gods and personalities as opposed to the Judeo-Christian religions. Ed Strauss contended that Marvel was able to dive into ancient Egyptian religion because it "had long been retired into the realm of mythology" unlike Christianity.

Example Output: b

Example Input: Question: When was Zimbabwe's new flag first raised? Passage:Following Rhodesia's Unilateral Declaration of Independence from the British Empire, the new Rhodesian authorities started to crack down on African liberation movements. One of their considerations was to ban performance of "Ishe Komborera Africa" in African schools and public performance of it often made people liable for arrest by the British South African Police. The District Commissioner for Gutu abolished the Gutu African Council after its leader opened a meeting by singing "Ishe Komborera Africa" in the District Commissioner's presence. The Commissioner also had the leader arrested but he was released without charge. Following the Southern Rhodesian general election, 1980, after Zimbabwe Rhodesia returned to British control as Southern Rhodesia, Robert Mugabe's Zimbabwe African National Union party won to become the first government of an independent Zimbabwe. After this, "Ishe Komborera Africa" was selected to replace the official "God Save the Queen" of Southern Rhodesia and the unofficial "Rise, O Voices of Rhodesia" of Rhodesia as the national anthem of an independent Zimbabwe as it was a symbol of black African struggles and solidarity against apartheid systems in South Africa and Namibia. At the Zimbabwean independence ceremony, the Union Jack was lowered to "God Save the Queen" and the new flag of Zimbabwe was raised to "Ishe Komborera Africa" in Salisbury.

Example Output: a

Example Input: Question: How much did the Royal Free Hospital charge patients the year Beck started working there? Passage:Diana Beck was born in 1900 in Hoole, Chester, to James Beck, a tailor, and Margaret Helena Kinloch. She attended The Queen's School before studying medicine at the London School of Medicine for Women, where she won two prizes and a scholarship. After graduating in 1925, she worked at the Royal Free Hospital as a house surgeon and then a surgical registrar throughout the 1930s. She chose to specialise in neurosurgery and trained under Hugh Cairns at the Radcliffe Infirmary in Oxford, where she also acted as a general surgeon providing treatment to injured soldiers during the war. In 1939, she was awarded the William Gibson Research Scholarship for Medical Women by the Royal Society of Medicine, and used the grant to undertake research in Oxford with Dorothy Stuart Russell. Using animal experiments, they investigated the causes of idiopathic intracranial hypertension and experimented with various graft materials for cranioplasty.

Example Output:
b