<http://schema.org/keywords>
"Oei Tjong,Oei Tiong Ham,Oei Siok,Oei Tjong Hauw,Oei Tjong Swan,Oei Siok Kiong,Oei family,Oei Tjong Tiong,Oei Tjong Hiong,Oei Tjong Bo,Oei Tjong Le,Oei Tjong Tjay,Oei Tjong Yoe,Oei Tjong Tee,Oei Tjong Tjiat,Oei Tjong Ik,Oei Siang Nio,Oei Tjong Liam,Oei Djoe Nio,Oei Hwan Nio,Oei Oen Nio,Oei Liang Nio,Oei Twan Nio,Oei Tjie Sien,Oei Swat Nio,life oei,Oei Bien Nio,Oei Tjong-lan,Kian Gwan,Tiong Ham Concern,Semarang,Siok Kiong Nio,Hoa Nio,Singapore,sugar factories,Tan Sien Nio,Mie Hoa Nio,Kiem Hoa Nio,Indonesia,Tjiang Tjoe Nio,Tjik Nio,Khiam Nio,Sugar King,chinese community,Semarang Chinese Community,company,Kian Gwan Kongsi,East Indies,opium trade,written contracts"^^<http://www.w3.org/2001/XMLSchema#string>
<http://eresources.nlb.gov.sg/infopedia/articles/SIP_1410_2009-01-06.html>