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'.

Sentence 1:The composition history of John is complex , but most scholars see it taking place in stages beginning as early as before AD 70 and extending as late as the end of the century . Sentence 2:nan
SINGLE_S_COORD_ANAPHORA

Sentence 1:The girls decided to put an end to their conflict , but Dimitra denied to join the rest of the models . Sentence 2:nan
SINGLE_S_COORD

Sentence 1:Decline and Fall . Sentence 2:Harper and Row , 1970 , p. 276 .

PAIR_NONE