question:  What did Tolliver tell Betty that was actually true?
context: By H. B. FYFE [Transcriber's Note: This etext was produced from Worlds of If Science Fiction, September 1961. "A little percentage here and there on the cargoes never shows by the time figures get back to Earth. "Okay I can't fire you legally—as long as you report for work," grumbled Jeffers, by now a shade more ruddy. "Doesn't matter," answered Tolliver, grinning amiably. Tolliver began to have his doubts the next day; which was "Tuesday" by the arbitrary calender constructed to match Ganymede's week-long journey around Jupiter. On the bulletin board, Tolliver's name stood out beside the number of one of the airtight tractors used between the dome city and the spaceport, or for hauling cross-country to one of the mining domes. He soon found that there was nothing for him to do but hang around the garage in case a spaceship should land. Sometimes there's no reason but them for sending a ship back with a crew instead of in an economy orbit. Under a portable, double-chambered plastic dome blown up outside the ship's airlock, a crewman helped him load two trunks and a collection of bags into the tractor. "Sure," agreed Tolliver thinking, Ohmigod! Trying already to be just one of the gang, instead of Lady Betty! "It's true enough," Tolliver assured her. They found they could send back loaded ships by 'automatic' flight—that is, a long, slow, economical orbit and automatic signalling equipment. "I'll tell you some day," Tolliver promised darkly. He enlarged upon other dangers to be encountered on the satellite, taking care to impress the newcomer with the daredeviltry of John Tolliver, driver of "missions" across the menacing wastes between dome and port. In the end, he displayed conclusive evidence in the form of the weekly paycheck he had received that morning. "I'm retiring in six months if I'm still alive," he said bravely, edging the tractor into the airlock at their destination.
output:  how much he's making to work on Ganymede
options:  he regularly drives armored vehicles on missions  the rock and ice slides kill people often  volcanic puffballs pop out through the frozen crust  how much he's making to work on Ganymede