question:  What is the significance of the narrator’s thumb print?
context: [Transcriber's Note: This etext was produced from Planet Stories Summer 1944. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] Words formed themselves on my thick tongue, words that must have been spoken by so many reviving unfortunates through the ages: "Where am I?" It is as well, for this will be a birth and beginning of your destined leadership on Dondromogon." The voice was telling me that I had been snatched from worlds away, for a specified purpose here on whatever windswept planet Dondromogon might be. Of course, such areas, between the hot and cold hemispheres, would be buffeted by mighty gales ... Dondromogon was found and settled long ago, by adventurers from afar. "Suffice it that you were needed, and that the time was ripe. There is a proper time, like a proper place, for each thing and each happening. On this strange world called Dondromogon, what manner of intelligent life bade defiance to heat and cold and storm, and built these stout structures, and now laid hands—were they hands indeed?—upon me? Each also had a shorter weapon, with a curved stock to fit the palm of the hand, borne snugly in a holster. Especially as I don't know who I am, or where I'm from, or anything that has happened longer ago than just a moment. "There's a bigger reward for capture than for warning," objected his friend in turn, "and whoever comes to take this man will claim 'capture.' With a whispering rasp it cleared from its scabbard. Before the clang of its fall was through echoing, I had caught it up, and set the point within inches of its owner's unprotected face. Then: "What's this?" "He pushed in, claimed he was no enemy, then tried to attack—" "They lie," I broke in, very conscious of my naked helplessness before her regard.
output:  It is proof that he is Yandro
options:  It is proof that he is Yandro  It is proof that he is from Earth  It is proof that he is a Newcomer  It is proof that he is a Master of Worlds