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Use "half-siblings" in a sentence
"Novel, if small-screen-scaled documentary in which half-siblings track down their sperm donor father, who turns out to be something of a leader in the field and an eccentric beach bum."
"The sudden realization that they have half-siblings or several dozens of half-siblings has to be confusing to many of the estimated 30 to 60 thousand IVF babies born in the United States each year."
"Mr. Kim and his younger sister spent much of their teenage years worried that their father would ostracize them and favor their half-siblings born of a later wife, according to accounts from relatives of the Kim family who escaped the country."