Context and question: Multi-color LEDs offer not merely another means to form white light but a new means to form light of different colors. Most perceivable colors can be formed by mixing different amounts of three primary colors. This allows precise dynamic color control. As more effort is devoted to investigating this method, multi-color LEDs should have profound influence on the fundamental method that we use to produce and control light color. However, before this type of LED can play a role on the market, several technical problems must be solved. These include that this type of LED's emission power decays exponentially with rising temperature, resulting in a substantial change in color stability. Such problems inhibit and may preclude industrial use. Thus, many new package designs aimed at solving this problem have been proposed and their results are now being reproduced by researchers and scientists.
Multi-color LEDs offer what else besides the formation of red light?
Answer: unanswerable
Context and question: A number of medications are being studied for multi drug resistant tuberculosis including: bedaquiline and delamanid. Bedaquiline received U.S. Food and Drug Administration (FDA) approval in late 2012. The safety and effectiveness of these new agents are still uncertain, because they are based on the results of a relatively small studies. However, existing data suggest that patients taking bedaquiline in addition to standard TB therapy are five times more likely to die than those without the new drug, which has resulted in medical journal articles raising health policy questions about why the FDA approved the drug and whether financial ties to the company making bedaquiline influenced physicians' support for its use 
Despite FDA approval, how much more likely to die are patients who take bedaquiline in addition to the standard TB regimen?
Answer: five times
Context and question: On 23 May 2001, the islands experienced an extratropical cyclone that generated winds up to 190 kilometres per hour (120 mph). A number of structures were severely damaged and a large number of cattle were killed, prompting emergency aid, provided by the British government.
In miles, what is the equivalent of 120 kilometres per hour?
Answer:
unanswerable