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'.

Sentence 1:A few years later another merger was attempted as the Country - National Organisation but this failed within a few years . Sentence 2:nan
SINGLE_S_COORD

Sentence 1:The role played by Murali was initially intended to be played by Karthik . Sentence 2:Similarly Laila replaced Sneha in the lead female role .
PAIR_NONE

Sentence 1:Matilda was proclaimed queen but was soon at odds with her subjects and was expelled from London . Sentence 2:nan

SINGLE_S_COORD_ANAPHORA