Input (grade 8): Lee Beom-seok (1900 â "1972) was the Korean independence activists and first prime minister of South Korea from 1948 to 1950. For a time, he also headed the Korean Youth Corps (ì ì ë 1\/4 ì ì ë
Output (grade 10): Lee Beon-Seok (hangul: ì ë "ì, October 20 1900 - May 11 1972) was Korean politician and independence activists.