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 Q]: Sentence 1:For people in Westernized countries , laughter is a sign of amusement , but in some parts of Africa it is a sign of wonder or embarrassment . Sentence 2:nan
[EX A]: SINGLE_S_COORD_ANAPHORA

[EX Q]: Sentence 1:The YouTube app , which had been a default app on iOS developed by Apple , was removed . Sentence 2:nan
[EX A]: SINGLE_RELATIVE

[EX Q]: Sentence 1:A head teacher got him transferred to Finchden Manor , a therapeutic community for teens with emotional difficulties in Kent , where he spent his following six years . Sentence 2:nan
[EX A]:
SINGLE_APPOSITION