instruction:
Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.
question:
Malaria, which is the result of Plasmodium falciparum infection, is a global health threat that resulted in 655,000 deaths and 216 million clinical cases in 2010 alone. Recent phase 3 trials with malaria vaccine candidate RTS,S/AS01 (RTS,S) in children has demonstrated modest efficacy against clinical and severe malaria. RTS,S targets the pre-erythrocytic phase of the disease and induces high antibody titers against the P. falciparum circumsporozoite protein (CSP) and a moderate CD4(+) T cell response. The individual contribution of these adaptive immune responses to protection from infection remains unknown. Here, we found that prophylactic administration of anti-CSP mAbs derived from an RTS,S-vaccinated recipient fully protected mice with humanized livers from i.v.- and mosquito bitedelivered P. falciparum sporozoite challenge. Titers of anti-CSP that conveyed full protection were within the range observed in human RTS,S vaccine recipients. Increasing anti-CSP titers resulted in a dose-dependent reduction of the liver parasite burden. These data indicate that RTS,S-induced antibodies are protective and provide sterilizing immunity against P. falciparum infection when reaching or exceeding a critical plasma concentration.
answer:
RTS S AS01 vaccine was developed to prevent which disease?


question:
The Volvo B12M is an underfloor-engined bus/coach chassis introduced by Volvo Buses in 2001 as a replacement for the Volvo B10M.
answer:
What year was Volvo B12M commissioned?


question:
When we are unfamiliar with something,we may feel nervous and fearful.The assistance of others is a good way to help us pull through. I write for a big newspaper, and I wanted to write a story about parachute jumping.To make it a realistic as well as exciting story,I decided that I first had to make a jump myself. Unfortunately,I am not good at any sports of any kind,let alone parachute jumping. My friend Mr. Smith was willing to give me a hand.He took me to a ground school.The first day's training included several hours of instruction but not my first drop from an airplane For this,I had to wait until the following morning. The next morning,after a hurried,anxious breakfast,I was taken to the airfield.There,two heavy parachutes were put on my back,and an orange helmet was pushed down onto my head.Then I was asked to make my way to a small plane which had just stopped slowly on the runway. Once on board,the plane was soon climbing.I began to feel nervous.As we reached one thousand metres,Harry,my teacher, hooked a line from my parachute to a steel ring inside the plane.The line was to pull my parachute open after I jumped. "Get ready, Henry,"Harry said.I moved carefully to the door.I wanted to cry,"No,no,no!"But no word came. "Jump!"Harry called loudly."Jump!" To my surprise,kicking like a frog I did jump.Away from the plane,and down,down I fell,arms stretched.It worked! The air seemed to hold me up.All at once I was very happy. Then I felt a quick pull.My big parachute had opened! It was the best surprise I ever had. I looked down.There were rivers,trees,fields and houses.I heard the soft sound of the air This was fun !
answer:

How did the writer feel after he jumped out of the plane?