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:Leonardo realizes that he might be a terrible , awful monster - but he could be a really good friend . Sentence 2:nan
answer:
SINGLE_S_COORD_ANAPHORA


question:
Sentence 1:Throughout the Republic , the administrative system was revised several times to comply with new demands . Sentence 2:In the end , it proved inefficient for controlling the ever - expanding dominion of Rome , contributing to the establishment of the Roman Empire .
answer:
PAIR_CONN_ANAPHORA


question:
Sentence 1:Although Eastwood was able to convince Siegel not to have Callahan toss the badge , when the scene was filmed , Eastwood changed his mind and went with Siegel 's preferred ending . Sentence 2:nan
answer:

SINGLE_CONN_START