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:A space charge develops a potential that slows the carriers down . Sentence 2:For example , an electron approaching a cloud of other electrons will slow down due to the repulsive force .
[EX A]: PAIR_CONN

[EX Q]: Sentence 1:Although the last data taken with JADE are 20 years old , analysis continues with the most recent paper published in 2005 . Sentence 2:nan
[EX A]: SINGLE_CONN_START

[EX Q]: Sentence 1:Brian had two sisters : Pamela , who was born on 3 October 1943 and died on 14 October 1945 of leukemia ; and Barbara , born on 22 August 1946 . Sentence 2:nan
[EX A]:
SINGLE_RELATIVE

