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'.
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Question: Sentence 1:Since the year 2000 , he has officiated in the annual series of national six - a-side tournaments called Masters Football , referees for which are FA endorsed . Sentence 2:nan

Answer: SINGLE_CONN_START


Question: Sentence 1:The Example is a Caroline era stage play , a comedy written by James Shirley , first published in 1637 . Sentence 2:nan

Answer: SINGLE_APPOSITION


Question: Sentence 1:Michael Richards hurt his back during the scene in which Jerry attempts to pull Kramer 's jeans off . Sentence 2:However , he was still able to finish filming for the episode .

Answer:
PAIR_CONN_ANAPHORA