This task is about creating an unanswerable question based on a given passage. Construct a question that looks relevant to the given context but is unanswerable. Following are a few suggestions about how to create unanswerable questions:
(i) create questions which require satisfying a constraint that is not mentioned in the passage
(ii) create questions which require information beyond what is provided in the passage in order to answer
(iii) replace an existing entity, number, date mentioned in the passage with other entity, number, date and use it in the question
(iv) create a question which is answerable from the passage and then replace one or two words by their antonyms or insert/remove negation words to make it unanswerable.

Example Input: Passage: External evidence is evidence of each physical witness, its date, source, and relationship to other known witnesses. Critics will often prefer the readings supported by the oldest witnesses. Since errors tend to accumulate, older manuscripts should have fewer errors. Readings supported by a majority of witnesses are also usually preferred, since these are less likely to reflect accidents or individual biases. For the same reasons, the most geographically diverse witnesses are preferred. Some manuscripts show evidence that particular care was taken in their composition, for example, by including alternative readings in their margins, demonstrating that more than one prior copy (exemplar) was consulted in producing the current one. Other factors being equal, these are the best witnesses. The role of the textual critic is necessary when these basic criteria are in conflict. For instance, there will typically be fewer early copies, and a larger number of later copies. The textual critic will attempt to balance these criteria, to determine the original text.
Example Output: External evidence is evidence of each physical witness, its date, source, relationship to other known witnesses, and what else? 

Example Input: Passage: Planetary geologists have measured different abundances of oxygen isotopes in samples from the Earth, the Moon, Mars, and meteorites, but were long unable to obtain reference values for the isotope ratios in the Sun, believed to be the same as those of the primordial solar nebula. Analysis of a silicon wafer exposed to the solar wind in space and returned by the crashed Genesis spacecraft has shown that the Sun has a higher proportion of oxygen-16 than does the Earth. The measurement implies that an unknown process depleted oxygen-16 from the Sun's disk of protoplanetary material prior to the coalescence of dust grains that formed the Earth.
Example Output: Where have Genesis geologists measured oxygen isotopes?

Example Input: Passage: Miami is a major television production center, and the most important city in the U.S. for Spanish language media. Univisión, Telemundo and UniMÁS have their headquarters in Miami, along with their production studios. The Telemundo Television Studios produces much of the original programming for Telemundo, such as their telenovelas and talk shows. In 2011, 85% of Telemundo's original programming was filmed in Miami. Miami is also a major music recording center, with the Sony Music Latin and Universal Music Latin Entertainment headquarters in the city, along with many other smaller record labels. The city also attracts many artists for music video and film shootings.
Example Output:
Along with UniMÁS and Univisión, what Spanish language radio station is headquartered in Miami?