TASK DEFINITION: Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.
PROBLEM: Isova is a ruined Frankish monastery in the Peloponnese, Greece, which was built after the Fourth Crusade and inhabited by Cistercian monks.

SOLUTION: To which religious order did Isova belong?

PROBLEM: In the county, the population was spread out with 23.20% under the age of 18, 7.70% from 18 to 24, 27.00% from 25 to 44, 28.00% from 45 to 64, and 14.10% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 97.00 males. For every 100 females age 18 and over, there were 96.40 males.

SOLUTION: Which age group had the most people?

PROBLEM: Do you want to visit Disney World? However, will you worry about your pet if you go to Disney World? To meet the needs of these people, a pet hotel has been built near the Disney World Resort in Florida. The new pet hotel is named Best Friends Pet Care Resort and it is mainly open to dogs and cats. It has an area of 4,645m2. About 270 dogs and 30 cats can be kept there at the same time. Besides dogs and cats, it can also provide services for birds, pigs and rabbits. However, it can't take care of snakes and turtles now. Best Friend Pet Care Resort is a very expensive hotel. There are several types of dog rooms, such as rooms with air-conditioners and VIP rooms. There is even a "private dog park". Owners can have a high-quality vacation with their dogs there. The cats are kept in the "Kitty City". The "Kitty City" is very comfortable and clean. Workers there will clean it once a day. Apart from having good equipment, Best Friends Pet Care Resort also have other plans to meet the psychological needs of pets. Workers play music to the pets, walk with them, play with them and even read stories to them before they go to bed. "We aim to make sure that pets will have a fun vacation here, just like their owners at Disney World," said the manager of the resort.

SOLUTION:
How often do the workers clean the "Kitty City"?