Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Multiracial people who wanted to acknowledge their full heritage won a victory of sorts in 1997, when the Office of Management and Budget (OMB) changed the federal regulation of racial categories to permit multiple responses. This resulted in a change to the 2000 United States Census, which allowed participants to select more than one of the six available categories, which were, in brief: "White," "Black or African American," "Asian," "American Indian or Alaskan Native," "Native Hawaiian or other Pacific Islander," and "Other." Further details are given in the article: Race (U.S. census). The OMB made its directive mandatory for all government forms by 2003.
In what year were participants no longer allowed to choose more than one of the six available categories?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
IR data transmission is also employed in short-range communication among computer peripherals and personal digital assistants. These devices usually conform to standards published by IrDA, the Infrared Data Association. Remote controls and IrDA devices use infrared light-emitting diodes (LEDs) to emit infrared radiation that is focused by a plastic lens into a narrow beam. The beam is modulated, i.e. switched on and off, to encode the data. The receiver uses a silicon photodiode to convert the infrared radiation to an electric current. It responds only to the rapidly pulsing signal created by the transmitter, and filters out slowly changing infrared radiation from ambient light. Infrared communications are useful for indoor use in areas of high population density. IR does not penetrate walls and so does not interfere with other devices in adjoining rooms. Infrared is the most common way for remote controls to command appliances. Infrared remote control protocols like RC-5, SIRC, are used to communicate with infrared.
Name the devices that use IrDA to emit infrared radiation that is focused by a plastic lens into a narrow beam. 
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In Australia, the Prime Minister is expected to step down if s/he loses the majority support of his/her party under a spill motion as have many such as Tony Abbott, Julia Gillard and Kevin Rudd.
What motion requires the head of State to step down in Australia?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In the U.S. News & World Report's "America’s Best Colleges" 2016 issue, KU’s School of Engineering was ranked tied for 90th among national universities.
In what place did the engineering school at UK appear in 2016?
A:
unanswerable