(LEAD) S. Korean Kim Bo-reum wins mass start gold at speed skating worlds
(ATTN: ADDS details, photo) By Yoo Jee-ho GANGNEUNG, South Korea, Feb. 12 (Yonhap) -- South Korean Kim Bo-reum captured gold medal in the women's mass start at the ongoing speed skating worlds on Sunday. Kim just beat out Nana Takagi of Japan to