Problem: Printed circuit board:

Semi-additive is the most common process: The unpatterned board has a thin layer of copper already on it. A reverse mask is then applied. (Unlike a subtractive process mask, this mask exposes those parts of the substrate that will eventually become the traces.) Additional copper is then plated onto the board in the unmasked areas; copper may be plated to any desired weight. Tin-lead or other surface platings are then applied. The mask is stripped away and a brief etching step removes the now-exposed bare original copper laminate from the board, isolating the individual traces. Some single-sided boards which have plated-through holes are made in this way. General Electric made consumer radio sets in the late 1960s using additive boards.

Who made consumer radio sets in the late 1940s using additive boards?
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A: unanswerable

Problem: Compact disc:

As a result, in 1979, Sony and Philips set up a joint task force of engineers to design a new digital audio disc. Led by engineers Kees Schouhamer Immink and Toshitada Doi, the research pushed forward laser and optical disc technology. After a year of experimentation and discussion, the task force produced the Red Book CD-DA standard. First published in 1980, the standard was formally adopted by the IEC as an international standard in 1987, with various amendments becoming part of the standard in 1996.

Who wrote the amendments in 1996?
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A: unanswerable

Problem: Dominican Order:

Dominic inspired his followers with loyalty to learning and virtue, a deep recognition of the spiritual power of worldly deprivation and the religious state, and a highly developed governmental structure. At the same time, Dominic inspired the members of his order to develop a "mixed" spirituality. They were both active in preaching, and contemplative in study, prayer and meditation. The brethren of the Dominican Order were urban and learned, as well as contemplative and mystical in their spirituality. While these traits had an impact on the women of the order, the nuns especially absorbed the latter characteristics and made those characteristics their own. In England, the Dominican nuns blended these elements with the defining characteristics of English Dominican spirituality and created a spirituality and collective personality that set them apart.

What country did Benedictine Order nuns thrive?
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A: unanswerable

Problem: American Idol:

On May 30, 2006, Taylor Hicks was named American Idol, with Katharine McPhee the runner-up. "Do I Make You Proud" was released as Hicks' first single and McPhee's was "My Destiny".

Who was the winner American Idol in 2006?
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A:
Taylor Hicks