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 Iotapa was annexed along with the Kingdom of Commagene by Roman Emperor Vespasian in 72 , Iotapa became a central city where coins were minted . Sentence 2:nan
answer:
SINGLE_CONN_START


question:
Sentence 1:Her sire Whiskey was a successful racehorse before breaking down in a race at Lewes . Sentence 2:At stud he sired 148 winners including The Derby winner Eleanor and the dams of the Derby winners Phantom and Priam .
answer:
PAIR_NONE


question:
Sentence 1:The common solution to this problem is to use an LR parser , which is a type of shift - reduce parser , and does bottom - up parsing . Sentence 2:nan
answer:

SINGLE_RELATIVE