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:Born in Montevideo , Sosa started his career in Danubio at the age of 15 , being one of the youngest footballers to play in the Uruguayan First Division . Sentence 2:He played for Danubio from 1982 to 1985 , when he was transferred to Spain 's Real Zaragoza .

Ex Output:
PAIR_ANAPHORA


Ex Input:
Sentence 1:Arthur later explains to them that Mordred survived because Lancelot was unwilling to kill Arthur 's son . Sentence 2:nan

Ex Output:
SINGLE_CONN_INNER


Ex Input:
Sentence 1:Jameson was born at Aberdeen , was brought up a Protestant , but became a Roman Catholic convert . Sentence 2:nan

Ex Output:

SINGLE_VP_COORD