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'.

Input: Consider Input: Sentence 1:The 2003 elections to West Dunbartonshire Council were held on the 1 May 2003 and were the third to the unitary authority , which was created along with 28 other local authorities , under the Local Government etc ( Scotland ) Act 1994 . Sentence 2:nan

Output: SINGLE_RELATIVE

Input: Consider Input: Sentence 1:The format has grown to many other cities , including New York , Los Angeles , Denver , Miami , and Albuquerque , NM . Sentence 2:But more Recently , the format has been replaced in several cities .

Output: PAIR_CONN

Input: Consider Input: Sentence 1:Animals were small by later standards , although horses from Britain were imported into Ireland as breed - stock to enlarge native horses . Sentence 2:nan
Output: SINGLE_CONN_INNER