instruction:
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'.
question:
Sentence 1:Although the Roman -- Parthian War ( 161 - 66 ) started auspiciously for the Parthians , after the Romans recovered from the first shock and setbacks , they counterattacked , restored Sohaemus to the Armenian throne and invaded the Parthian Empire . Sentence 2:nan
answer:
SINGLE_CONN_START


question:
Sentence 1:The year was marked by halfhearted attempts of the U.S. Army to respond to Kennedy 's emphasis on developing a greater capability in counterinsurgency , although the U.S. Military Assistance Advisory Group began providing counterinsurgency training to the South Vietnamese army . Sentence 2:nan
answer:
SINGLE_CONN_INNER


question:
Sentence 1:For example , those that are found in very hot regions tend to be larger , whereas those found in regions of high humidity tend to be smaller than average . Sentence 2:nan
answer:

SINGLE_CONN_INNER