instruction:
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'.
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


question:
Sentence 1:One forms the center of the city ( poblacion ) whereas the other 14 are in the outlying areas . Sentence 2:nan
answer:
SINGLE_CONN_INNER


question:
Sentence 1:Mala and her Dragon Worshippers have the riders at sword point , but Hiccup proposes a ceasefire and convinces Mala to trust them as they set out to retrieve the Eruptodon while Heather and the twins help stop the lava flow . Sentence 2:nan
answer:

SINGLE_S_COORD_ANAPHORA