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.

Ex Input:
Question: Which Bala directed movie that Ameer served as an assistant had a higher box office? Passage:Ameer Sultan was born in Madurai, Tamil Nadu India. He initially studied economics and worked as an entrepreneur before starting to work as an assistant director to Tamil filmmaker Bala on his award-winning film Sethu in 1999 and Nandha in 2001. Shortly after, he directed his first film, the romantic comedy Mounam Pesiyadhe (2002). The film starred Suriya in the lead and became Trisha Krishnan's first release featuring her in a leading role. The same year, he began his own production company, Teamwork Production House. His second directorial was the mystery thriller Raam, which he produced himself and released A three years later. The film, which revolves around an autistic teenager, portrayed by Jiiva, who is highly attached to his mother, but becomes suspected of having murdered her, received critical acclaim, with Jeeva and the film's composer Yuvan Shankar Raja winning awards at the 2005 Cyprus International Film Festival. It also became Jeeva's breakthrough in the film industry, who till then had appeared in two unsuccessful home productions only. In 2007, he directed the drama Paruthiveeran set in a village in Tamil Nadu, which marked the debut of Karthi, younger son of Sivakumar and brother of Suriya. Critics heaped high praise on the film and Ameer's direction, while Karthi as well as Priyamani, who performed the female lead, won several notable prizes for their performances. Paruthiveeran remains Ameer's most acclaimed work, having received six Filmfare Awards South including the Best Film and Best Director trophies, two National Film Awards, two Tamil Nadu State Film Awards and four Vijay Awards. The film further fetched accolades at international platform, winning the Best Film Award at the Osian's Cinefan Festival of Asian and Arab Cinema and Netpac Special Mention award at the Berlin International Film Festival. He did his fourth directorial, Aadhi Bhagavan, featuring Jayam Ravi and Neetu Chandra in the lead roles, released 2013 for positive reviews. Ameer's next film is Jihad which is his own production. That is a love story.


Ex Output:
a


Ex Input:
Question: Was Nathan Sivin alive when Han Zhenhua claimed that Nanhai referred to the Scarborough Shoal? Passage:The People's Republic of China and the Republic of China (Taiwan) claim that Chinese people discovered the shoal centuries ago and that there is a long history of Chinese fishing activity in the area. The shoal lies within the nine-dotted line drawn by China on maps marking its claim to islands and relevant waters consistent with United Nations Convention on the Law of the Sea (UNCLOS) within the South China Sea. An article published in May 2012 in the PLA Daily" states that Chinese astronomer Guo Shoujing went to the island in 1279, under the Yuan dynasty, as part of an empire-wide survey called "Measurement of the Four Seas" (四海测验), however, no such 13th century map has been made public by China nor such evidence on the existence of the map is known. In 1979 historical geographer Han Zhenhua (韩振华) was among the first scholars to claim that the point called "Nanhai" (literally, "South Sea") in that astronomical survey referred to Scarborough Shoal. In 1980 during a conflict with Vietnam for sovereignty over the Paracel Islands (Xisha Islands), however, the Chinese government issued an official document claiming that "Nanhai" in the 1279 survey was located in the Paracels. Historical geographer Niu Zhongxun defended this view in several articles. In 1990, a historian called Zeng Zhaoxuan (曾昭璇) argued instead that the Nanhai measuring point was located in Central Vietnam. Historian of astronomy Chen Meidong (陈美东) and historian of Chinese science Nathan Sivin have since agreed with Zeng's position in their respective books about Guo Shoujing.


Ex Output:
b


Ex Input:
Question: How long had Milan been established by the year that Nava returned there as a reserve in the first team's defense? Passage:He returned to Milan in 1990, where he was a reserve in the first team's defence, behind the legendary Maldini, Baresi, Costacurta, Tassotti back-line, which is regarded by many as the sport as one of the greatest difensive line-ups of all time. He made his Milan debut on 5 September 1990, in a 1–0 home Coppa Italia victory over Triestina, as Milan went on to reach the final of the tournament. He made his Serie A debut with the club on 3 March 1991, in a 4–1 home win over Napoli. In his four non-consecutive seasons with Milan (1990–91 under Arrigo Sacchi, and 1992–995 under Fabio Capello), Nava made a total of 47 appearances in all competitions, and 21 Serie A league appearances, scoring 1 goal, which came in Serie A. During his time at the club he won two Serie A titles, three Supercoppa Italiana titles, two UEFA Super Cups, an UEFA Champions League, and an Intercontinental Cup. He spent the 1991–92 season only loan with Parma, where he won the Coppa Italia. His final appearance with Milan was in a 5–0 away victory against Brescia, during the 1994–95 Serie A season, on 5 March 1995.


Ex Output:

b