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:As a result of the shortages , Venezuelans must search for food , wait in lines for hours and sometimes settle without having certain products . Sentence 2:nan
[A]: SINGLE_VP_COORD


[Q]: Sentence 1:Mallory and Bullock suggested names for the many topographical features they discovered and these were endorsed by the expedition and passed to Charles Bell , Britain 's special ambassador to Lhasa , for approval . Sentence 2:nan
[A]: SINGLE_APPOSITION


[Q]: Sentence 1:The Candaba Viaduct passes over Candaba Swamp and adjacent Pampanga River and connects the provinces of Pampanga and Bulacan , hence its alternative name . Sentence 2:nan
[A]:
SINGLE_CONN_INNER_ANAPHORA