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'.

[Q]: Sentence 1:Describing these elements as functions of design , he argues the urban designer should be aware of these elements and use them as tools when developing a ' design idea ' of what the city or place ought to look like . Sentence 2:nan
[A]: SINGLE_CATAPHORA


[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
[A]: SINGLE_APPOSITION


[Q]: Sentence 1:The duplicate Fry froze himself to return to the future and be with Leela . Sentence 2:However , when he learned that time travel paradoxes were doomed , he canceled the wedding to spare Leela the pain of his inevitable death .
[A]:
PAIR_CONN_ANAPHORA