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:Following at the rear of the 12th ( Yorkshire ) Parachute Battalion , they arrived at Le Bas de Ranville . Sentence 2:nan

Ex Output:
SINGLE_CATAPHORA


Ex Input:
Sentence 1:David Nabarro , the newly appointed Senior United Nations System Coordinator for Avian and Human Influenza , warned the world that an outbreak of avian influenza could kill 5 to 150 million people . Sentence 2:nan

Ex Output:
SINGLE_APPOSITION


Ex Input:
Sentence 1:The company 's lending business 118118Money , a subsidiary of kgb , launched as an online service in September 2013 . Sentence 2:nan

Ex Output:

SINGLE_APPOSITION