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'.

Sentence 1:Ellen thinks she cost a car salesman his job , so she gets him a job at her bookstore . Sentence 2:nan
SINGLE_S_COORD_ANAPHORA

Sentence 1:Working in his hometown for almost two decades , he elevated the artistic and technical standards of the company dancers to a remarkable degree and created many works for ballet stages , for opera and operetta , and for television productions . Sentence 2:nan
SINGLE_CATAPHORA

Sentence 1:Over 14,000 artillery rounds were fired in a 24 - hour period . Sentence 2:Finally , on September 5 , the North Koreans abandoned the ridge after UN forces succeeded in outflanking it .

PAIR_CONN