In this task, you are given two sentences in the English language and your task is to classify them into one of their discourse types. A discourse type is an indicator to classify the given two sentences on the basis of a co-text as well as a relevant context. There are 13 discourse types in total which are 'SINGLE_S_COORD', 'SINGLE_CATAPHORA', 'SINGLE_CONN_INNER', 'SINGLE_APPOSITION', 'SINGLE_VP_COORD', 'SINGLE_CONN_START', 'PAIR_ANAPHORA', 'PAIR_CONN', 'SINGLE_RELATIVE', 'SINGLE_CONN_INNER_ANAPHORA', 'SINGLE_S_COORD_ANAPHORA', 'PAIR_CONN_ANAPHORA' and 'PAIR_NONE'.

Input: Consider Input: Sentence 1:An eager vigilante is causing a stir in the city , while Krang and Shredder take control of all the machines in the city . Sentence 2:nan

Output: SINGLE_CONN_INNER


Input: Consider Input: Sentence 1:Mordechai Omer also described Zaritsky 's use of light in his paintings and suggests that in these paintings the light is not perceived as a tonal problem . Sentence 2:In fact , Omer claims , Zaritsky left the objects in the paintings unnuanced. ( 12 )

Output: PAIR_CONN


Input: Consider Input: Sentence 1:Alain makes Makoto doubt that his sister is truly back to normal , leading Takeru to try to convince him otherwise . Sentence 2:However , Javel 's return complicates matters as he focuses his attacks on Makoto .


Output: PAIR_CONN_ANAPHORA