question:  What does Jones likely think Evans is up to when he finds him?
context: It was two days to sunrise, where Evans stood. The shadow line between day and night could be seen from the Moon to be drifting across Australia. Evans, who had no watch, thought of the time as a quarter after Australia. Evans was a prospector, and like all prospectors, a sort of jackknife geologist, selenologist, rather. Once he followed a stampede to Yellow Crater, where he thought for a while that he had a fortune in chromium. Evans was about three hundred miles east of Williamson Town, the site of the first landing on the Moon. Evans was due back at Williamson Town at about sunset, that is, in about sixteen days. In seventeen days he might be missed, but in seventeen days it would be dark again, and the search for him, if it ever began, could not begin for thirteen more days. Evans sealed the turbine from the rest of the steam system by closing the shut-off valves. Carefully he poured a cup of his drinking water into a pipe that led to the boiler, and resealed the pipe. The sun rose on Williamson Town at about the same time it rose on Evans. They might have appeared to waver slightly, if they were behind outflung corona flares. When Director McIlroy came into his office, he found it lighted by the rising sun. For example, because of an order of his stating that there would be no alcoholic beverages within the survey building, the entire survey was assured of a constant supply of home-made, but passably good liquor. Morning to him had no meaning at all, but he thought in the strictest sense that it would be morning on the Moon for another week. The solar furnace was a rough parabola of mirrors used to focus the sun's heat on anything that it was desirable to heat. Walker says he's got a half dozen mirrors cracked or pitted, and Hoffman on bank three wants you to replace a servo motor. "That could hurt," Cowalczk admitted, "but there was only one of them."
output:  He thought his oxygen machine was meant to be a temporary survival tool
options:  He saw that he was setting up a mine to start collecting water  He thought he had found a new source of crystals  He thought he was already dead  He thought his oxygen machine was meant to be a temporary survival tool