question:  Who was performing at the Satellite Theater when Billy-boy and Grannie Annie arrived?
context: "Beg pardon, thir," he said with his racial lisp, "thereth thome one to thee you in the main lounge." The Spacemen's was a sanctuary, a rest club where in-coming pilots and crewmen could relax before leaving for another voyage. There she stood before a frantically gesticulating desk clerk, leaning on her faded green umbrella. In the grille an equally astonished waiter served us—me a lime rickey and Grannie Annie her usual whisky sour—I waited until she had tossed the drink off at a gulp before I set off a chain of questions: "What the devil are you doing on Venus? But to me she was still Grannie Annie, as old-fashioned as last year's hat, as modern as an atomic motor. If Annabella C. Flowers wrote a novel, and the locale was the desert of Mars, she packed her carpet bag and hopped a liner for Craterville. Grannie spilled a few shreds of Martian tobacco onto a paper and deftly rolled herself a cigarette. Grannie Annie hailed a hydrocar. A theater to the grizzled colonials on this side of the planet meant a shack on stilts over the muck, zilcon wood seats and dingy atobide lamps. It read: ONE NIGHT ONLY DOCTOR UNIVERSE AND HIS NINE GENIUSES THE QUESTION PROGRAM OF THE SYSTEM As we strode down the aisle a mangy-looking Venusian began to pound a tinpan piano in the pit. Grannie Annie pushed me into a seat in the front row. She minced lightly down the aisle, climbed the stage steps and disappeared in the wings. On the stage four Earthmen, two Martians, two Venusians, and one Mercurian sat on an upraised dais. On the right were nine visi sets, each with its new improved pantascope panel and switchboard. Before each set stood an Earthman operator. I will only say that on this stage are nine visi sets, each tuned to one of the nine planets. Doctor Universe nodded and turned to Grannie Annie who had raised her hand. They applauded as before but they did so only at the signal of Doctor Universe.
output:  Doctor Universe
options:  The Swamp City community members  Charles Zanner  Doctor Universe  Annabellla C. Flowers