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:Beginning on January 30 , 1951 , Dodd led his platoon against Hill 256 , a strongly defended position near Subuk , Korea , as part of Operation Thunderbolt . Sentence 2:nan
[A]: SINGLE_CATAPHORA


[Q]: Sentence 1:La Tribuna ( in Spanish ) . Sentence 2:2009 - 11 - 02 .
[A]: PAIR_NONE


[Q]: Sentence 1:The first unit to be created was the A-type overdrive , which was fitted to many sports cars during the 1950s , and into the late 1960s . Sentence 2:nan
[A]:
SINGLE_RELATIVE