Similarly, for the C-Model, we introduce a binary variable y t 1 ,t 2 for each pair of triples such that the object of one is the subject of the other.
(t 1 , t 2 ) is a C-bigram iff t 1 = (s1, p1, o1), t2 = (s2, p2, o2) and o1 = s2.