TASK DEFINITION: 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'.
PROBLEM: Sentence 1:Nothing Sado does is pleasing to the king , who proceeds to humiliate his son . Sentence 2:However , the Royal Queen Dowager is overjoyed at Sado 's wisdom and acts as his protector .

SOLUTION: PAIR_CONN_ANAPHORA

PROBLEM: Sentence 1:Scott received his B.S. degree from Massachusetts Institute of Technology and graduated with a J.D. from the University of California , Los Angeles . Sentence 2:He has taught as a law professor at Southwestern Law School .

SOLUTION: PAIR_ANAPHORA

PROBLEM: Sentence 1:Noah risks his life to save his old teacher from slavery , while Rachel deals with a card shark in Kansas . Sentence 2:nan

SOLUTION:
SINGLE_CONN_INNER