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'.

Example Input: Sentence 1:Its small userbase is advertised as a positive because it generally aids in the quick resolution of problems . Sentence 2:nan
Example Output: SINGLE_CONN_INNER

Example Input: Sentence 1:On 2012 , Ex Battalion was firstly formed and founded by Bosx1ne and rap battle emcees Jekkpot and Cent as a rap battle group , they had joined several barangay rap battles before being into music . Sentence 2:nan
Example Output: SINGLE_VP_COORD

Example Input: Sentence 1:The fruits of this variety are about two inches in diameter and turn bright orange - red when ripe , although they are usually eaten when still green . Sentence 2:nan
Example Output:
SINGLE_CONN_INNER_ANAPHORA