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'.

Ex Input:
Sentence 1:( Sharon Kafee Ugalde , 2012 ) . Sentence 2:The poet uses her own style and language in her work .

Ex Output:
PAIR_NONE


Ex Input:
Sentence 1:Cassius Dio did not mention any action by the Romans there . Sentence 2:Therefore , we do not know how the Roman governor of this province dealt with this situation .

Ex Output:
PAIR_CONN_ANAPHORA


Ex Input:
Sentence 1:Jupiter 's past acting ability benefits him frequently in mysteries because he can act older than he is . Sentence 2:nan

Ex Output:

SINGLE_CONN_INNER