Problem: On May 20, 2011, Schwarzenegger's entertainment counsel announced that all movie projects currently in development were being halted: "Schwarzenegger is focusing on personal matters and is not willing to commit to any production schedules or timelines". On July 11, 2011, it was announced that Schwarzenegger was considering a comeback film despite his legal problems. He appeared in The Expendables 2 (2012), and starred in The Last Stand (2013), his first leading role in 10 years, and Escape Plan (2013), his first co-starring role alongside Sylvester Stallone. He starred in Sabotage, released in March 2014, and appeared in The Expendables 3, released in August 2014. He starred in the fifth Terminator movie Terminator Genisys in 2015 and will reprise his role as Conan the Barbarian in The Legend of Conan.
On what date in 2011 was the hold on Schwarzenegger's movie projects announced?
The answer is the following: May 20

Problem: Some of Antarctica has been warming up; particularly strong warming has been noted on the Antarctic Peninsula. A study by Eric Steig published in 2009 noted for the first time that the continent-wide average surface temperature trend of Antarctica is slightly positive at >0.05 C (0.09 F) per decade from 1957 to 2006. This study also noted that West Antarctica has warmed by more than 0.1 C (0.2 F) per decade in the last 50 years, and this warming is strongest in winter and spring. This is partly offset by autumn cooling in East Antarctica. There is evidence from one study that Antarctica is warming as a result of human carbon dioxide emissions, but this remains ambiguous. The amount of surface warming in West Antarctica, while large, has not led to appreciable melting at the surface, and is not directly affecting the West Antarctic Ice Sheet's contribution to sea level. Instead the recent increases in glacier outflow are believed to be due to an inflow of warm water from the deep ocean, just off the continental shelf. The net contribution to sea level from the Antarctic Peninsula is more likely to be a direct result of the much greater atmospheric warming there.
What is thought to be the cause of glacier outflow?
The answer is the following: inflow of warm water

Problem: In 1682, William Penn founded the city to serve as capital of the Pennsylvania Colony. Philadelphia played an instrumental role in the American Revolution as a meeting place for the Founding Fathers of the United States, who signed the Declaration of Independence in 1776 and the Constitution in 1787. Philadelphia was one of the nation's capitals in the Revolutionary War, and served as temporary U.S. capital while Washington, D.C., was under construction. In the 19th century, Philadelphia became a major industrial center and railroad hub that grew from an influx of European immigrants. It became a prime destination for African-Americans in the Great Migration and surpassed two million occupants by 1950.
Who founded Philadelphia?
The answer is the following: William Penn

Problem: A hunter-gatherer is a human living in a society in which most or all food is obtained by foraging (collecting wild plants and pursuing wild animals), in contrast to agricultural societies, which rely mainly on domesticated species.
What type of society relies on domestication for producing food?
The answer is the following:
agricultural