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'.

Ex Input:
Sentence 1:Sudanese diplomats had assisted the planned attack on the United Nations headquarters . Sentence 2:Consequently , the US government placed Sudan on a watch list of terrorist countries .

Ex Output:
PAIR_CONN_ANAPHORA


Ex Input:
Sentence 1:Players , which have officially retired from the national team , are considered as inactive despite of the date of the last game . Sentence 2:nan

Ex Output:
SINGLE_RELATIVE


Ex Input:
Sentence 1:The celebrated Bodhi tree still exists , but is very much decayed ; one large stem , with three branches to the westward , is still green , but the other branches are barkless and rotten . Sentence 2:nan

Ex Output:

SINGLE_S_COORD