Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

Ex Input:
The Raytown Branch of Mid-Continent Public Library is offering the following activities for the month of March. The library is located at 6131 Raytown Road. All activities are free, but registration is required. Tax Help for Seniors 10 a.m. Mondays and Wednesdays. AARP Tax-Aide representatives will be at the Library to assist seniors with medium to low incomes with tax questions and free tax return preparation. Time listed indicates starting time. Teen Games 2 p.m. March 2. Challenge yourself, challenge your friends. Movie Classics For adults, 2 p.m. March 4. Join us for an afternoon of nostalgia as we watch classic films. Call to see what's showing. KC Zoomobile Africa, for ages 5 and older, 11 a.m. March 5. Join the Kansas City Zoo for an African adventure. We will share African culture as well as show you an animal or two. Come with us to learn something new about Africa. Kids at the Library For ages 6 and older, 11 a.m. March 12. Discover, create, and play. Explore big ideas in a new way. Chess Free Play For ages 6 and older, 1 p.m. March 12. Play chess, learn the basics, brush up on your chess skills, challenge other players at Free Chess Play at the library. The Raytown Branch, in cooperation with the Raytown High School Chess Team coaches, will be hosting chess on the second Saturday of the month from 1 to 3 p.m. Chess boards and chess pieces will be provided. Eggstravaganza Noon March 26. Join us for story time with Mayor Mike McDonough, as we take part in Raytown's Easter festivities. After the stories, the Easter Bunny will escort the children across the street for an Easter egg hunt.

Ex Output:
Which activity is more likely to develop imagination and creativity?


Ex Input:
''Nothing Good Happens After 2 A.M.'' is the 18th episode in the first season of the television series How I Met Your Mother.

Ex Output:
What series is the episode Nothing Good Happens After 2 A.M. part of?


Ex Input:
Iron depletion is common in regular blood donors. The objective of the study was to investigate the frequency and severity of iron depletion in regular blood donors and whether IV iron is more effective than oral to avoid iron depletion and symptoms thereof, especially restless legs syndrome (RLS). One hundred and twenty blood donors with at least five previous whole blood donations were randomized to receive either IV iron sucrose (Venofer(®), RenaPharma/Vifor, Uppsala, Sweden), 200 mg, or to 20100 mg of oral iron sulphate (Duroferon(®), GlaxoSmithKline, Stockholm, Sweden), after each blood donation during 1 year. Iron status and RLS incidence and severity were investigated. Iron status was generally poor among regular blood donors, especially in women, with a high incidence of iron depletion (>20%) and RLS (18%). The IV iron group increased storage iron to a greater extent than the oral iron group after 12 months (P=00043). Female donors were more responsive to IV iron sucrose compared to oral iron sulphate, particularly female donors below 50 years of age. RLS severity scores were significantly lower in the IV iron group. The two treatments were safe. Iron status is poor in regular blood donors, restless legs syndrome is common, and the routine iron supplementation is insufficient. IV iron sucrose substitutes iron loss in blood donors more efficiently compared with oral iron sulphate, especially in women. Iron substitution to blood donors should be individualized and based on P-ferritin monitoring.

Ex Output:

Which deficiency is the cause of restless leg syndrome?