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:B Orbach and G Campbell , The Antitrust Curse of Bigness , Southern California Law Review ( 2012 ) . Sentence 2:nan
[EX A]: SINGLE_APPOSITION

[EX Q]: Sentence 1:Sudanese diplomats had assisted the planned attack on the United Nations headquarters . Sentence 2:Consequently , the US government placed Sudan on a watch list of terrorist countries .
[EX A]: PAIR_CONN_ANAPHORA

[EX Q]: Sentence 1:The words spoken must also be addressed to a listener - the conventions of akam poetry did not permit soliloquies . Sentence 2:However , the listener need not necessarily be the person to whom the words are seemingly addressed .
[EX A]:
PAIR_CONN