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'.

[Q]: Sentence 1:Professor Amamori discovers a 10th planet in the Earth 's solar system , which he names La - Metal , while at his observatory in Tokyo . Sentence 2:nan
[A]: SINGLE_RELATIVE


[Q]: Sentence 1:Koirala led his country 's delegation to the United Nations and made carefully poised visits to China and India , then increasingly at odds over territorial disputes . Sentence 2:Yet , he was in trouble at home almost from the beginning .
[A]: PAIR_CONN_ANAPHORA


[Q]: Sentence 1:However , Nasir ud din Mahmud died suddenly in 1229 CE , and Iltutmish was at a loss as to a successor , because he felt that none of his several surviving sons . Sentence 2:nan
[A]:
SINGLE_CONN_INNER_ANAPHORA