Since these supervised approaches often has a high requirement on the quality and quantity of annotated corpus, which is always not easy to create.
for the above example, we select the "欧莱雅美宝莲兰蔻 (L'Oreal, Maybelline, Lancome)" and its context "是 (is)"as a seed "欧莱雅美宝莲兰蔻是".