We define it according to the maximum similarity:  while, abundant text corpus contains large amount of potential knowledge complementary to existing KBs.
researchers leverage both types of resources to improve various natural language processing (NLP) related tasks, such as relation extraction (Weston et al., 2013;Lin et al., 2017), and entity linking (Tsai and Roth, 2016;Yamada et al., 2016;Ji et al., 2016).