Thus, if a sentence also mentions another entity, it implicitly expresses their relation.
we make a similar assumption as in relation extraction: If two entities participate in a relation, and both of them where x y i is either a word or an entity, and C(x y i ) denotes: (i) contextual words in a pre-defined window of x y i if x y i ∈ D y , (ii) neighbor entities that linked to x y i if x y i ∈ G y , (iii) contextual words of w y j if x y i is entity e y i in an anchor ⟨w y j , e y i ⟩ ∈ A y .