Question: In 2002, IBM acquired PwC consulting. In 2003 it initiated a project to redefine company values. Using its Jam technology, it hosted a three-day Internet-based online discussion of key business issues with 50,000 employees. Results were data mined with sophisticated text analysis software (eClassifier) for common themes. Three emerged, expressed as: "Dedication to every client's success", "Innovation that matters—for our company and for the world", and "Trust and personal responsibility in all relationships". Another three-day Jam took place in 2004, with 52,000 employees discussing ways to implement company values in practice.
Is there an answer to this question: What did employees introduce to change company values?

Answer: unanswerable


Question: When Emperor Constantine I died, Athanasius was allowed to return to his See of Alexandria. Shortly thereafter, however, Constantine's son, the new Roman Emperor Constantius II, renewed the order for Athanasius's banishment in 338. Athanasius went to Rome, where he was under the protection of Constans, the Emperor of the West. During this time, Gregory of Cappadocia was installed as the Patriarch of Alexandria, usurping the absent Athanasius. Athanasius did, however, remain in contact with his people through his annual Festal Letters, in which he also announced on which date Easter would be celebrated that year.
Is there an answer to this question: At what point could Athanasius return to Alexandria?

Answer: When Emperor Constantine I died


Question: The state government left Philadelphia in 1799, and the federal government was moved to Washington, DC in 1800 with completion of the White House and Capitol. The city remained the young nation's largest with a population of nearly 50,000 at the turn of the 19th century; it was a financial and cultural center. Before 1800, its free black community founded the African Methodist Episcopal Church (AME), the first independent black denomination in the country, and the first black Episcopal Church. The free black community also established many schools for its children, with the help of Quakers. New York City soon surpassed Philadelphia in population, but with the construction of roads, canals, and railroads, Philadelphia became the first major industrial city in the United States.
Is there an answer to this question: Which city surpassed the population of Philadelphia?

Answer: New York City


Question: The most common symptom of LED (and diode laser) failure is the gradual lowering of light output and loss of efficiency. Sudden failures, although rare, can also occur. Early red LEDs were notable for their short service life. With the development of high-power LEDs the devices are subjected to higher junction temperatures and higher current densities than traditional devices. This causes stress on the material and may cause early light-output degradation. To quantitatively classify useful lifetime in a standardized manner it has been suggested to use L70 or L50, which are the runtimes (typically given in thousands of hours) at which a given LED reaches 70% and 50% of initial light output, respectively.
Is there an answer to this question: What could cause early light-output degradation in LEDs?

Answer:
higher junction temperatures