The Contextual Temporal Profile (CTP) of an entity e at time t, C e (t), consists of the context within which e is mentioned.
c e (t) consists of uni-grams and bi-grams generated from the 5-grams(Google Books Ngram) or sentences (Gigaword) that mention e at time t. Notice that the cTPs can contain context units (bi-grams or uni-grams) that are simply noise.