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

[EX Q]: An Australian inventor has designed and built an environmentally friendly ferry that uses solar and wind power to transport people around Sydney Harbor. Robert Dane and his Solar Sailor were given the top prize at the Australian Design Awards recently. The Solar Sailor has been in use for six months. It uses four sources of energy for its power -- solar, wind, battery power with stored solar energy and a fuel generator in store all controlled by computers. The ferry can travel up to 7.5 knots on just wind and solar power. It's solar wings and fiberglass solar panels which not only take in sunlight and store it in batteries, but also act as sails. "We angle our solar panels to the sun in two planes , which increases the amount of energy we get from the sun by 40 percent," Dane says. "And also we can use that same structure to do another job, which is also the sail, and so these wing sails actually push the ferry forward just like a soft sail does." Computers check the sun and wind and angle the solar wings to take in the most sunlight. If there isn't much wind or it is a cloudy day, energy stored in the batteries runs the electric motor for up to five hours. "If the batteries are too low, then the computer turns the generator on so the boat is always able to meet a commercial schedule, or get from point A to point B no matter what," Dan explains. Dane got his idea for the Solar Sailor from a book on insects. He was amazed how insects use their wings to collect solar energy to warm themselves. "When I read that, I realized there was a good example in nature for what we were going to do, which was to use a solar wing to collect solar energy and also to sail," he says.
[EX A]: What is the Solar Sailor?

[EX Q]: Two forms of neurofibromatosis, type 1 (NF1) and type 2 (NF2) are connected with genes localized on chromosomes 17 and 22, respectively. The genes that are inactivated in neurofibromatosis code for the proteins neurofibromine and merline, respectively. Since inactivation leads to neoplasia, they are called tumour suppressor genes. Neurofibromine shows resemblances to proteins that serve to inactivate oncogenes. Merline has a relationship with proteins that connect the cytoskeleton and the cell membrane. The precise function of the proteins is still unknown. The NF1 gene is characterized by extraordinarily high sensitivity to mutation; half the NF1 patients have not inherited the disease. In the familial form of neurofibromatosis, a mutated gene is inherited and the normal allele in the tumour is inactivated, making tumour growth possible. In the sporadic form of neurofibromatosis, both normal alleles are inactivated locally in the tissue so that a tumour develops in that place.
[EX A]: Which is the gene mutated in type 1 neurofibromatosis?

[EX Q]: There was once an ant that was very thirsty. It ran here and there looking for some water but could not find any. Then suddenly, when the ant was almost ready to die of thirst, a large drop of water fell on it. The ant drank the water, which saved its life. The water was actually a tear from a young girl who was crying. Because of her sadness, the tear had magical qualities and suddenly the ant could speak the language of human beings. The ant looked up and saw the young girl sitting in front of a huge pile of seeds. "Why are you sad?" asked the ant. "I'm the prisoner of a giant." the girl told the ant. " He won't let me go until I've made three separate heaps of grain, barley and rye out of this huge pile of seeds in which they are all mixed together." "That will take you a month!" the ant said, looking at the huge pile of seeds. "I know," the girl cried, "and if I haven't finished by tomorrow, the giant will eat me for his supper!" "Don't cry," the ant said, "my friends and I will help you." Soon thousands of ants were at work, separating the three kinds of seeds. The next morning, when the giant saw that the work had been done, he let the girl go. Thus it was one of her tears that saved her life.
[EX A]:
Who or what saved the girl's life?