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.

Question: What year was the treaty that opened up the Korean Peninsula to Japanese trade signed? Passage:Un'yō  was one of the ships dispatched to Kyūshū in 1874 during the Saga Rebellion. In May 1875, she carried diplomats to Busan in Korea in an attempt by the Japanese government to open diplomatic relations with the Joseon dynasty government. After they were rebuffed in these negotiations, the Japanese government again dispatched Un'yō in September 1875 under the command of Inoue Yoshika to provoke a military response, in what was later termed the Ganghwa Island incident. This eventually led to the Treaty of Ganghwa, which opened the Korean Peninsula to Japanese trade. In 1876, Un'yō  was assigned to assist in the suppression of the Hagi Rebellion, another uprising of disaffected former samurai. Un'yō  was severely damaged when she ran aground off the coast of the Kii Peninsula, and was scrapped the following year.

b

Question: How old was Madonna when she released her second studio album? Passage:American entertainer Madonna has worked in twenty-six feature films (twenty-one as an actress), ten short films, three theatrical plays, ten television episodes, and appeared in sixteen commercials. at age 16, she auditioned in a high-school short movie called "the egg" where she played a teenage sunbather relaxing at a patio eating raw eggs. In 1979, she made her acting debut in the low-budget feature A Certain Sacrifice. Its commercial release in 1985 coincided with the success of her second studio album, Like a Virgin. That same year, she made a cameo appearance as a club singer in the film Vision Quest; she also garnered commercial and critical success for the title role in Susan Seidelman's Desperately Seeking Susan. Madonna followed it with a leading role in the adventure drama Shanghai Surprise (1986), with her then-husband, actor Sean Penn. The film was panned by critics, and Madonna received her first Golden Raspberry Award for Worst Actress. Her next films such as Who's That Girl (1987) and Bloodhounds of Broadway (1989) were critical and commercial failures. In 1986, she made her theatrical debut in David Rabe's Goose and Tom-Tom and her first commercial for Mitsubishi in Japan. She starred in the 1989 commercial for Pepsi-Cola alongside her song "Like a Prayer". Due to the controversy surrounding the song's music video, the commercial was revoked and her contract with Pepsi-Cola was cancelled.

b

Question: How old was Ottone's nephew when Ottone was appointed Archbishop of Milan by the Pope? Passage:Still in Montefiascone, near Viterbo, where he received Pope's appointment, Ottone marched to Arona on 1 April 1263, where he met several nobles fled by Milan for their opposition to Della Torre. Informed on Ottone's presence in Lombardy, Martino sent his troops to put Arona under siege. Ottone, who occupied the near Rocca of Angera, was forced to surrender on 5 May 1263. Returned in Montefiascone, Ottone lost his powerful ally Urban IV, died on October 1264. Della Torre, however, never get Raimondo formal appointment, and after Martino's death, the once loyal Pallavicino family switched side to Visconti, scheming the assassination of Paganino della Torre, podestà of Vercelli, on January 1266. In response, the new lord of Milan Napoleone della Torre executed 53 nobles, suspected of conjuring. This vicious act undermined Della Torre's grab on Milan, aggravated by Pope Gregory X, a Visconti of Piacenza, who in 1273 confirmed Ottone Visconti as legal Archbishop of Milan. Napoleone della Torre reacted exiling all noble families who don't supported him, causing the formation of an émigré coalition in Novara and Pavia. Using their financial and military support, Ottone's nephew Teobaldo Visconti led an army in Vercelli, occupying Castelseprio. Defeated by Torriani's forces, Teobaldo fled to Lurate, near Como, but after a battle in Gallarate, his last forces were defeated and he was beheaded by Napoleone della Torre in 1276. Ottone, returned in Lombardy in the same year, recruited his supporters near Desio, where he was canon, and after a bloody battle on January 1277, Visconti emerged victorius. Napoleone della Torre was imprisoned and tortured to death in Castel Baradello, while his brother Francesco was executed after the battle. Ottone entered in Milan on 22 January 1277, becoming the first Visconti de facto ruler of the city.


b