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.

Input: Consider Input: Passage: The University of Kansas School of Business is a public business school located on the main campus of the University of Kansas in Lawrence, Kansas. The KU School of Business was founded in 1924 and currently has more than 80 faculty members and approximately 1500 students.

Output: What kind of institution isn't KU's School of Business?

Input: Consider Input: Passage: Melatonin is absent from the system or undetectably low during daytime. Its onset in dim light, dim-light melatonin onset (DLMO), at roughly 21:00 (9 p.m.) can be measured in the blood or the saliva. Its major metabolite can also be measured in morning urine. Both DLMO and the midpoint (in time) of the presence of the hormone in the blood or saliva have been used as circadian markers. However, newer research indicates that the melatonin offset may be the more reliable marker. Benloucif et al. found that melatonin phase markers were more stable and more highly correlated with the timing of sleep than the core temperature minimum. They found that both sleep offset and melatonin offset are more strongly correlated with phase markers than the onset of sleep. In addition, the declining phase of the melatonin levels is more reliable and stable than the termination of melatonin synthesis.

Output: When is Meletonin found in the system?

Input: Consider Input: Passage: The Santa Monica Looff Hippodrome (carousel) is a National Historic Landmark. It sits on the Santa Monica Pier, which was built in 1909. The La Monica Ballroom on the pier was once the largest ballroom in the US and the source for many New Year's Eve national network broadcasts. The Santa Monica Civic Auditorium was an important music venue for several decades and hosted the Academy Awards in the 1960s. McCabe's Guitar Shop is still a leading acoustic performance space as well as retail outlet. Bergamot Station is a city-owned art gallery compound that includes the Santa Monica Museum of Art. The city is also home to the California Heritage Museum and the Angels Attic dollhouse and toy museum.
Output: In what year was the Santa Monica Looff Hippodrome built?