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:It is always at amateur level . Sentence 2:However , lacrosse in Scotland goes back to 1890 at St Leonards School , Fife , where women 's lacrosse had been introduced by Louisa Lumsden .
Example Output: PAIR_CONN

Example Input: Sentence 1:Although Judith uses the money for Lindsay , she spends most of it in the poker machines , and her money transfer is cut off when the Supreme Court finds out about her activity . Sentence 2:nan
Example Output: SINGLE_CONN_START

Example Input: Sentence 1:Once again he does not have to face Asashoryu , who withdraws on Day 10 , prompting speculation about his possible retirement . Sentence 2:nan
Example Output:
SINGLE_RELATIVE