Input: Read this: Many units are supplemented with a variety of specialized weapons, including the M249 SAW (Squad Automatic Weapon), to provide suppressive fire at the fire-team level. Indirect fire is provided by the M203 grenade launcher. The M1014 Joint Service Combat Shotgun or the Mossberg 590 Shotgun are used for door breaching and close-quarters combat. The M14EBR is used by designated marksmen. Snipers use the M107 Long Range Sniper Rifle, the M2010 Enhanced Sniper Rifle, and the M110 Semi-Automatic Sniper Rifle.
Question: What type of automatic weapon do snipers use?

Output: unanswerable

Input: Read this: New Haven has many architectural landmarks dating from every important time period and architectural style in American history. The city has been home to a number of architects and architectural firms that have left their mark on the city including Ithiel Town and Henry Austin in the 19th century and Cesar Pelli, Warren Platner, Kevin Roche, Herbert Newman and Barry Svigals in the 20th. The Yale School of Architecture has fostered this important component of the city's economy. Cass Gilbert, of the Beaux-Arts school, designed New Haven's Union Station and the New Haven Free Public Library and was also commissioned for a City Beautiful plan in 1919. Frank Lloyd Wright, Marcel Breuer, Alexander Jackson Davis, Philip C. Johnson, Gordon Bunshaft, Louis Kahn, James Gamble Rogers, Frank Gehry, Charles Willard Moore, Stefan Behnisch, James Polshek, Paul Rudolph, Eero Saarinen and Robert Venturi all have designed buildings in New Haven. Yale's 1950s-era Ingalls Rink, designed by Eero Saarinen, was included on the America's Favorite Architecture list created in 2007.
Question: New Haven served as home to what two notable 19th century architects?

Output: Ithiel Town and Henry Austin

Input: Read this: For a century, the Appalachians were a barrier to the westward expansion of the British colonies. The continuity of the mountain system, the bewildering multiplicity of its succeeding ridges, the tortuous courses and roughness of its transverse passes, a heavy forest, and dense undergrowth all conspired to hold the settlers on the seaward-sloping plateaus and coastal plains. Only by way of the Hudson and Mohawk Valleys, Cumberland Gap, the Wachesa Trail,[undue weight? discuss] and round about the southern termination of the system were there easy routes to the interior of the country, and these were long closed by powerful Native American tribes such as the Iroquois, Creek, and Cherokee, among others. Expansion was also blocked by the alliances the British Empire had forged with Native American tribes, the proximity of the Spanish colonies in the south and French activity throughout the interior.
Question: What prevented the Appalachian expansion?

Output: unanswerable

Input: Read this: In theory at least, all Polish noblemen were social equals. Also in theory, they were legal peers. Those who held 'real power' dignities were more privileged but these dignities were not hereditary. Those who held honorary dignities were higher in 'ritual' hierarchy but these dignities were also granted for a lifetime. Some tenancies became hereditary and went with both privilege and titles. Nobles who were not direct barons of the Crown but held land from other lords were only peers "de iure".
Question: Nobles held land form whom?

Output:
other lords were only peers "de iure"