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:Since the 2006 Palestinian legislative election and the formation of a Hamas government in the PA , Israel has regularly withheld the taxes it owes the PA . Sentence 2:nan

Output: SINGLE_CONN_START


Input: Consider Input: Sentence 1:Schizachne is a genus of Eurasian and North American plants in the grass family . Sentence 2:The only accepted species is Schizachne purpurascens , commonly called false mesic .

Output: PAIR_ANAPHORA


Input: Consider Input: Sentence 1:The Broncos had one final possession , and advanced to as far as the Colts ' 23 - yard line with nine seconds remaining in the game , but without any timeouts , the game ended . Sentence 2:nan


Output: SINGLE_VP_COORD