In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

Example Input: Which dog breed is taller, the Chihuahua or the Irish Wolfhound?, Context: Most breeds of dog are at most a few hundred years old, having been artificially selected for particular morphologies and behaviors by people for specific functional roles. Through this selective breeding, the dog has developed into hundreds of varied breeds, and shows more behavioral and morphological variation than any other land mammal. For example, height measured to the withers ranges from 15.2 centimetres (6.0 in) in the Chihuahua to about 76 cm (30 in) in the Irish Wolfhound; color varies from white through grays (usually called "blue") to black, and browns from light (tan) to dark ("red" or "chocolate") in a wide variation of patterns; coats can be short or long, coarse-haired to wool-like, straight, curly, or smooth. It is common for most breeds to shed this coat.
Example Output: Irish Wolfhound

Example Input: Which country has less than 650,000 elevators installed as of January 2008, the United States or China?, Context: As of January 2008, Spain is the nation with the most elevators installed in the world, with 950,000 elevators installed that run more than one hundred million lifts every day, followed by United States with 700,000 elevators installed and China with 610,000 elevators installed since 1949. In Brazil, it is estimated that there are approximately 300,000 elevators currently in operation. The world's largest market for elevators is Italy, with more than 1,629 million euros of sales and 1,224 million euros of internal market.
Example Output: China

Example Input: what time span is mentioned last?, Context: Polytechnic Institutes are technological universities, many dating back to the mid-19th century. A handful of world-renowned Elite American universities include the phrases "Institute of Technology", "Polytechnic Institute", "Polytechnic University", or similar phrasing in their names; these are generally research-intensive universities with a focus on engineering, science and technology. The earliest and most famous of these institutions are, respectively, Rensselaer Polytechnic Institute (RPI, 1824), New York University Tandon School of Engineering (1854) and the Massachusetts Institute of Technology (MIT, 1861). Conversely, schools dubbed "technical colleges" or "technical institutes" generally provide post-secondary training in technical and mechanical fields, focusing on training vocational skills primarily at a community college level—parallel and sometimes equivalent to the first two years at a bachelor's degree-granting institution.
Example Output:
first two years