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'.

Input: Consider Input: Sentence 1:Although Bernstein left as music director in 1969 , he continued to lead the Young People 's Concerts as Conductor Emeritus until 1972 . Sentence 2:nan

Output: SINGLE_CONN_START


Input: Consider Input: Sentence 1:Her sire Whiskey was a successful racehorse before breaking down in a race at Lewes . Sentence 2:At stud he sired 148 winners including The Derby winner Eleanor and the dams of the Derby winners Phantom and Priam .

Output: PAIR_NONE


Input: Consider Input: Sentence 1:Federal Cabinet Member Ernest Lapointe , the Quebec lieutenant of Prime Minister William Lyon Mackenzie King , promised that no one would face conscription if voters supported the Liberals . Sentence 2:nan


Output: SINGLE_APPOSITION