Input: Article: The heavy infantry of the maniples were supported by a number of light infantry and cavalry troops, typically 300 horsemen per manipular legion. The cavalry was drawn primarily from the richest class of equestrians. There was an additional class of troops who followed the army without specific martial roles and were deployed to the rear of the third line. Their role in accompanying the army was primarily to supply any vacancies that might occur in the maniples. The light infantry consisted of 1,200 unarmoured skirmishing troops drawn from the youngest and lower social classes. They were armed with a sword and a small shield, as well as several light javelins.

Now answer this question: Small shields could be found in what section of the infantry?

Output: light infantry

Input: Article: Areas such as South Street and Old City have a vibrant night life. The Avenue of the Arts in Center City contains many restaurants and theaters, such as the Kimmel Center for the Performing Arts, which is home to the Philadelphia Orchestra, generally considered one of the top five orchestras in the United States, and the Academy of Music, the nation's oldest continually operating opera house, home to the Opera Company of Philadelphia and the Pennsylvania Ballet. The Wilma Theatre and Philadelphia Theatre Company have new buildings constructed in the last decade on the avenue. They produce a variety of new works. Several blocks to the east are the Walnut Street Theatre, America's oldest theatre and the largest subscription theater in the world; as well as the Lantern Theatre at St. Stephens Church, one of a number of smaller venues.

Now answer this question: Who uses the opera house?

Output: Opera Company of Philadelphia and the Pennsylvania Ballet

Input: Article: Extending across the north and south side of the Alps in west-central Europe, Switzerland encompasses a great diversity of landscapes and climates on a limited area of 41,285 square kilometres (15,940 sq mi). The population is about 8 million, resulting in an average population density of around 195 people per square kilometre (500/sq mi). The more mountainous southern half of the country is far more sparsely populated than the northern half. In the largest Canton of Graubünden, lying entirely in the Alps, population density falls to 27 /km² (70 /sq mi).

Now answer this question: Which mountain range does Switzerland extend over on both the north and south sides?

Output:
Alps