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 official IAU name for the main star that is ioninizing the surrounding material? Passage:Sharpless 264, also known as the Lambda Orionis Ring, is a molecular cloud and H II region, which can be seen in the northern region of the Orion Molecular Cloud Complex (OMCC), in the constellation of Orion. The OMCC is one of the best-known star formation regions and the closest sector of the Milky Way to our Solar System where high-mass stars are born. The nebula is named after its main star, Orionis, a blue giant responsible for the ionization of the surrounding material. It is also sometimes called the Angelfish Nebula due to its resemblance as to its lighter areas (pink to peach colour) to an angelfish. In the infrared its ionized boundaries are that which appears, instead.

Example Output: b

Example Input: Question: Which institution where Kavlie studied after leaving the Royal Norwegian Navy currently has the most undergraduate students enrolled? Passage:He was born in Oslo, and took the siv.ing. degree at the Norwegian Institute of Technology in 1963. He then spent a year as a conscript in the Royal Norwegian Navy, took the doctorate in ship construction at the Institute of Technology, studied at the University of California at Berkeley before entering the shipping sector. In 1972 he took the Ph.D. degree. He then returned to academia, being hired as a lecturer at the Institute of Technology. In 1976 he was promoted to professor. From 1980 he was the deputy rector of the Norwegian Institute of Technology, and from 1984 to 1990 he served as rector. Deputy rector during this period was Kjell Egil Eimhjellen. The KavlieEimhjellen team was succeeded in July 1990 by rector Karsten Jakobsen and deputy rector Emil Spjtvoll. Kavlie continued as a professor until 1991.

Example Output: a

Example Input: Question: What are the symptoms of the disease Cole had when Derek Hough nursed her back to health? Passage:"Promise This" is an up-tempo dance-pop song written by American songwriter Priscilla Hamilton, British music producer Wayne Wilkins, who was responsible for Cole's debut single "Fight for This Love", and Christopher Jackson. It is written in the music key of C minor with a time signature in common time and a tempo of 151beats per minute. Cole's vocal range spans from G to E. The basic chord progression of the song is Cm, Cm, Cm, Cm, E, B, F, Cm, E, B and F. The song sees Cole singing some of the lyrics in French, referencing the children's song "Alouette". It was recorded in Santa Monica, California, and "finds her contemplating mortality with a cheerful morbidity, asking for prayers over a brutal march beat." Tabloids suggested that the lyrics were based upon her divorce from footballer Ashley Cole, and how her dancer friend Derek Hough nursed her to health while she was suffering from malaria. The Daily Star had also noted Cole's apparent affection in the song by her use of the French word alouette, meaning "skylark".

Example Output:
b