Input: Article: In 2008, Bloomberg claimed child labour in copper and cobalt mines that supplied Chinese companies in Congo. The children are creuseurs, that is they dig the ore by hand, carry sacks of ores on their backs, and these are then purchased by these companies. Over 60 of Katanga's 75 processing plants are owned by Chinese companies and 90 percent of the region's minerals go to China. An African NGO report claimed 80,000 child labourers under the age of 15, or about 40% of all miners, were supplying ore to Chinese companies in this African region. Amnesty International alleged in 2016 that some cobalt sold by Congo Dongfang Mining was produced by child labor, and that it was being used in lithium-ion batteries powering electric cars and mobile devices worldwide.

Now answer this question: What percent of materials go to China?

Output: 90 percent

Input: Article: In September 2005, West announced that he would release his Pastelle Clothing line in spring 2006, claiming "Now that I have a Grammy under my belt and Late Registration is finished, I am ready to launch my clothing line next spring." The line was developed over the following four years – with multiple pieces teased by West himself – before the line was ultimately cancelled in 2009. In 2009, West collaborated with Nike to release his own shoe, the Air Yeezys, with a second version released in 2012. In January 2009, West introduced his first shoe line designed for Louis Vuitton during Paris Fashion Week. The line was released in summer 2009. West has additionally designed shoewear for Bape and Italian shoemaker Giuseppe Zanotti.

Now answer this question: What year was Kanye's Pastelle Clothing Line scrapped?

Output: 2009

Input: Article: The question of priority for the variable resistance feature of the telephone was raised by the examiner before he approved Bell's patent application. He told Bell that his claim for the variable resistance feature was also described in Gray's caveat. Bell pointed to a variable resistance device in Bell's previous application in which Bell described a cup of mercury, not water. Bell had filed the mercury application at the patent office a year earlier on February 25, 1875, long before Elisha Gray described the water device. In addition, Gray abandoned his caveat, and because he did not contest Bell's priority, the examiner approved Bell's patent on March 3, 1876. Gray had reinvented the variable resistance telephone, but Bell was the first to write down the idea and the first to test it in a telephone.

Now answer this question: When did Bell put in his prior patent?

Output:
February 25, 1875