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'.

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 .
PAIR_CONN_ANAPHORA

Sentence 1:West Berlin was under the sovereignty of the Western Allies and neither a Western German state nor part of one . Sentence 2:However , it was in many ways de facto integrated with West Germany under a special status .
PAIR_CONN

Sentence 1:Those who own property in Nashua , or who are retired from work in Nashua , can also apply for a free card . Sentence 2:nan

SINGLE_S_COORD