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'.

[Q]: Sentence 1:Its small userbase is advertised as a positive because it generally aids in the quick resolution of problems . Sentence 2:nan
[A]: SINGLE_CONN_INNER


[Q]: 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 .
[A]: PAIR_CONN


[Q]: Sentence 1:This continued until The Rock delivered a DDT on Cena . Sentence 2:But instead of pinning Cena , Rock instead went for a fourth Rock Bottom and Cena countered with a third AA to win the match and the title .
[A]:
PAIR_CONN_ANAPHORA