Input: Article: Madonna performed at the Hope for Haiti Now: A Global Benefit for Earthquake Relief concert in January 2010. In April she released her third live album, Sticky & Sweet Tour. It was her first release under Live Nation, but was distributed by Warner Bros. Madonna granted American TV show Glee the rights to her entire catalogue of music, and the producers planned an episode featuring Madonna songs exclusively. Glee: The Music, The Power of Madonna, an EP containing eight cover versions of Madonna songs featured in the episode, was released afterward and debuted at number one on the Billboard 200.

Now answer this question: When did Madonna perform at the Hope for Haiti Now?

Output: January 2010

Input: Article: The iPod is a line of portable media players and multi-purpose pocket computers designed and marketed by Apple Inc. The first line was released on October 23, 2001, about 8½ months after iTunes (Macintosh version) was released. The most recent iPod redesigns were announced on July 15, 2015. There are three current versions of the iPod: the ultra-compact iPod Shuffle, the compact iPod Nano and the touchscreen iPod Touch.

Now answer this question: The iPod Touch uses what kind of interface?

Output: touchscreen

Input: Article: Also in 1931, Hayek critiqued Keynes's Treatise on Money (1930) in his "Reflections on the pure theory of Mr. J. M. Keynes" and published his lectures at the LSE in book form as Prices and Production. Unemployment and idle resources are, for Keynes, caused by a lack of effective demand; for Hayek, they stem from a previous, unsustainable episode of easy money and artificially low interest rates. Keynes asked his friend Piero Sraffa to respond. Sraffa elaborated on the effect of inflation-induced "forced savings" on the capital sector and about the definition of a "natural" interest rate in a growing economy. Others who responded negatively to Hayek's work on the business cycle included John Hicks, Frank Knight, and Gunnar Myrdal. Kaldor later wrote that Hayek's Prices and Production had produced "a remarkable crop of critics" and that the total number of pages in British and American journals dedicated to the resulting debate "could rarely have been equalled in the economic controversies of the past."

Now answer this question: Hayek's critical analysis of Keyne's work was published under what title?

Output:
Prices and Production