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:However , KARI experienced more difficulties than expected in SLV development , because it required much stronger propellant power than KSR - III possessed to launch a satellite into orbit . Sentence 2:nan
[A]: SINGLE_CONN_INNER_ANAPHORA


[Q]: Sentence 1:There is no known information on Barbapiccola 's formal education . Sentence 2:However , it is suggested that much of her knowledge accumulated by means of conversations in Neapolitan salons .
[A]: PAIR_CONN_ANAPHORA


[Q]: Sentence 1:It is also based on he American version of the series , In Treatment . Sentence 2:It debuted on 1 October 2012 at GNT , at 10 pm and ended on 30 November , with a total of 45 episodes .
[A]:
PAIR_NONE