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: What is the maximum length of the species that is known to prey on the crossback stingaree? Passage:The broadnose sevengill shark (Notorynchus cepedianus) is known to prey on the crossback stingaree. When threatened, this ray raises its tail warningly above its body in a scorpion-like fashion. Parasites documented from this species include a tapeworm in the genus Acanthobothrium, and the monogenean Calicotyle urolophi. Like other stingrays, the crossback stingaree is aplacental viviparous: when the developing embryos exhaust their supply of yolk, their mother provisions them with nutrient-rich histotroph ("uterine milk") through specialized extensions of the uterine epithelium called "trophonemata". Females produce litters of 1–4 pups every other year. Embryonic development proceeds rapidly over a six-month period, though the total gestation period may be much longer if there is a period of dormancy for the eggs after fertilization, as has been reported in other stingarees. Off Tasmania, large estuaries such as at the mouth of the River Derwent serve as nursery areas.

Example Output: b

Example Input: Question: How many years did the person who possibly encouraged Eumenes to revolt reign? Passage:Although nominally under Seleucid control, Pergamon under Philetaerus enjoyed considerable autonomy. However, upon his succession, Eumenes, perhaps with the encouragement of Ptolemy II, who was at war with the Seleucids, revolted, defeating the Seleucid king Antiochus I near the Lydian capital of Sardis in 261 BC. He was thus able to free Pergamon, and greatly increase the territories under his control. In his new possessions, he established garrison posts in the north at the foot of Mount Ida called Philetaireia after his adoptive father, and in the east, northeast of Thyatira near the sources of the river Lycus, called Attaleia after his grandfather, and he extended his control south of the river Caïcus to the Gulf of Cyme as well. Demonstrating his independence, he began to strike coins with the portrait of Philetaerus, while his predecessor had still depicted Seleucus I Nicator.

Example Output: b

Example Input: Question: Of the women the song was compared to in Slant Magazine, who was born first? Passage:Kerri Mason of Billboard called the song a harmonious ballad which, along with the single "4 Minutes", "might be some of her best work yet". She also said that the song sounded familiar and compared it with Timbaland's remix of the 2008 single "Apologize". Caryn Ganz from Rolling Stone believed the song has a "melancholy pining". Stephen Thomas Erlewine from Allmusic held the view that "the icy heartbreak of 'Miles Away'" was "a worthy successor of Justin Timberlake's 2006 single 'What Goes Around.../...Comes Around'". Sal Cinquemani of Slant Magazine said that the song has the typical ensuring quality of the production of Timbaland and Justin Timberlake, and bears the "pair's distinct, modern stamp, making Hard Candy more than just a throwback to Donna Summer, Anita Ward, and Quaaludes." Chris William from Entertainment Weekly made the observation that "Miles Away" was one of the "few actual confessions on this dance floor [Hard Candy]—enough to give the tabs speculative fodder." He also compared the song to "What Goes Around.../...Comes Around". Jim Farber of the New York Daily News called it the album's most beguiling tune.

Example Output:
b