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

Ex Output:
SINGLE_CONN_INNER


Ex Input:
Sentence 1:Since his return from Sudan , Steidle has spoken at more than 500 venues including Harvard Law School , Princeton , UCLA , West Point and the US Naval Academy . Sentence 2:nan

Ex Output:

SINGLE_CONN_START