question:  What didn't Roger learn when he returned to Earth?
context: If it only had a lease that could be broken— Roger Tennant, crossing the lawn, could see two of the three wings of the house, which radiated spoke-like from its heptagonal central portion. Their captors had no idea of how a woven design should behave. Within the dome of the barrier, it looked more like a well-kept if bizarre little country estate. They entered the house, which had no roof, continued to move beneath a sky that glowed with light which did not come from a sun or moon. Eudalia, who had borne twin girls recently, was lying back, newly thin and dark of skin and hair, smoking a scentless cigarette. Eudalia had been a female foreman in a garment-cutting shop before being captured and brought through. He turned to Olga, broad, blonde and curiously vital, who sat perfectly still, regarding him over the pregnant swell of her dirndl-clad waist. Olga had been a waitress in a mining town hash-house near Scranton. Tennant wanted to put an encouraging hand on her shoulder, to say something that might cheer her up, for she was by far the youngest of the three female captives, barely nineteen. It arrived before the meal, materializing against one of the seven walls of the roofless chamber. Olga sat up straight, her pale blue eyes round with utter disbelief. Dana stood almost in the center of the room, carmine-tipped fingers clasped beneath the swell of her breasts. Somehow it brings things closer...." This was so with all of their foods, with their cigarettes, with everything in their prison—or their cage. "He didn't ask to come here any more than we did. We seem to be in a universe of different properties as well as different dimensions. "But I'll settle for the fourth—a fourth dimension in space, if that makes scientific sense, because we don't seem to have moved in time.
output:  that he could stay if he used his new powers
options:  that the aliens couldn't capture other men  that he had been in a car accident  that his wife had found someone new  that he could stay if he used his new powers