Wiktionary
a. The possessive adjective for someone. contraction 1 someone is 2 someone has
Usage examples of "someone's".
Then let her be released again at someone's earnest request, and taken on one side, and let her again be persuaded.
To us passengers it was a pointless exercise in going nowhere--about as interesting as peering over someone's shoulder while he punches numbers into a spreadsheet.
PC hardware makers who hire designers to make their stuff look distinctive get their clocks cleaned by Taiwanese clone makers punching out boxes that look as if they belong on cinderblocks in front of someone's trailer.
The peasant saw a carrion bird fly away with what appeared to be a small piece of someone's toe!
Among the Seanchan, it refers to honor or face, to the ability to meet someone's eyes.