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:^ Jump up to : A second agreement , which replaced the first , was signed with Iceland and Norway following the incorporation of the Schengen Agreement into EU law with the Treaty of Amsterdam of 1997 . Sentence 2:nan

Ex Output:
SINGLE_RELATIVE


Ex Input:
Sentence 1:Although he never flew into space , he served as a backup crew member on the Soyuz 16 , Soyuz 32 , Soyuz 35 , and Soyuz T - 4 missions . Sentence 2:nan

Ex Output:
SINGLE_CONN_START


Ex Input:
Sentence 1:Batting for thirteen hours , he hit 30 fours and by the time he left the score was 458 for 8 -- well ahead of New Zealand 's first innings total of 195 . Sentence 2:nan

Ex Output:

SINGLE_CATAPHORA