Problem: USB:

The USB standard specifies relatively loose tolerances for compliant USB connectors to minimize physical incompatibilities in connectors from different vendors. To address a weakness present in some other connector standards, the USB specification also defines limits to the size of a connecting device in the area around its plug. This was done to prevent a device from blocking adjacent ports due to the size of the cable strain relief mechanism (usually molding integral with the cable outer insulation) at the connector. Compliant devices must either fit within the size restrictions or support a compliant extension cable that does.

Due to size restrictions compliant devices must what?
---
A: fit within the size restrictions or support a compliant extension cable that does

Problem: Federal Bureau of Investigation:

In 2003 a congressional committee called the FBI's organized crime informant program "one of the greatest failures in the history of federal law enforcement." The FBI allowed four innocent men to be convicted of the March 1965 gangland murder of Edward "Teddy" Deegan in order to protect Vincent Flemmi, an FBI informant. Three of the men were sentenced to death (which was later reduced to life in prison), and the fourth defendant was sentenced to life in prison. Two of the four men died in prison after serving almost 30 years, and two others were released after serving 32 and 36 years. In July 2007, U.S. District Judge Nancy Gertner in Boston found the bureau helped convict the four men using false witness account by mobster Joseph Barboza. The U.S. Government was ordered to pay $100 million in damages to the four defendants.

When did the FBI stop four innocent men from being convicted?
---
A: unanswerable

Problem: Post-punk:

At the turn of the 21st century, a post-punk revival developed in British and American alternative and indie rock, which soon started appearing in other countries, as well. The earliest sign of a revival was the emergence of various underground bands in the mid-'90s. However, the first commercially successful bands the Strokes, Franz Ferdinand, Interpol, Neils Children and Editors surfaced in the late 1990s to early 2000s, as did several dance-oriented bands such as the Rapture, Radio 4 and LCD Soundsystem. Additionally, some darker post-punk bands began to appear in the indie music scene in the 2010s, including Cold Cave, She Wants Revenge, Eagulls, the Soft Moon, She Past Away and Light Asylum, who were also affiliated with the darkwave revival, as well as A Place to Bury Strangers, who combined early post-punk and shoegaze. These bands tend to draw a fanbase who are a combination of the indie music subculture, older post-punk fans and the current goth subculture. In the 2010s, Savages played a music reminiscent of early British post-punk bands of the late '70s.

When did some of the darker post-punk bands start to appear in the indie scene?
---
A: the 2010s

Problem: Northwestern University:

Northwestern requires that all new buildings be LEED-certified. Silverman Hall on the Evanston campus was awarded Gold LEED Certification in 2010; Wieboldt Hall on the Chicago campus was awarded Gold LEED Certification in 2007, and the Ford Motor Company Engineering Design Center on the Evanston campus was awarded Silver LEED Certification in 2006. New construction and renovation projects will be designed to provide at least a 20% improvement over energy code requirements where technically feasible. The university also released at the beginning of the 200809 academic year the Evanston Campus Framework Plan, which outlines plans for future development of the Evanston Campus. The plan not only emphasizes the sustainable construction of buildings, but also discusses improving transportation by optimizing pedestrian and bicycle access. Northwestern has had a comprehensive recycling program in place since 1990. Annually more than 1,500 tons are recycled at Northwestern, which represents 30% of the waste produced on campus. Additionally, all landscape waste at the university is composted.

How many gallons of waste are recycled at Northwestern yearly?
---
A:
unanswerable