Task: Question Generation
Input (English): Passage: For his 1896 attempt to launch the balloon, Andrée had many eager volunteers to choose from. He picked Nils Gustaf Ekholm, an experienced Arctic meteorological researcher and formerly his boss during an 1882–1883 geophysical expedition to Spitsbergen, and Nils Strindberg, a brilliant student who was doing original research in physics and chemistry. The main scientific purpose of the expedition was to map the area by means of aerial photography, and Strindberg was both a devoted amateur photographer and a skilled constructor of advanced cameras.This was a team with many useful scientific and technical skills, but lacking any particular physical prowess or training for survival under extreme conditions. All three men were indoor types, and only one, Strindberg, was young. Andrée expected a sedentary voyage in a balloon basket, and strength and survival skills were far down on his list.Modern writers all agree that Andrée's North Pole scheme was unrealistic. He relied on the winds blowing more or less in the direction he wanted to go, on being able to fine-tune his direction with the drag ropes, on the balloon being sealed tight enough to stay airborne for 30 days, and on no ice or snow sticking to the balloon to weigh it down.In the attempt of 1896, the wind immediately refuted his optimism by blowing steadily from the north, straight at the balloon hangar at Danes Island, until the expedition had to pack up, let the hydrogen out of the balloon, and go home. It is now known that northerly winds are to be expected at Danes Island; but in the late-19th century, information on Arctic airflow and precipitation existed only as contested academic hypotheses. Even Ekholm, an Arctic climate researcher, had no objection to Andrée's theory of where the wind was likely to take them. The observational data simply did not exist.
Output (English): What are the last names of the people with many useful scientific and technical skills?