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'.
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Question: Sentence 1:Mart Stam , who worked during 1926 as employee - designer at the Brinkman & Van der Vlugt office in Rotterdam , came in contact with the Russian Avant - Garde in 1922 in Berlin . Sentence 2:nan

Answer: SINGLE_RELATIVE


Question: Sentence 1:Russians were strongly tied to tradition and feared they would lose their long cherished personal connection to the Tsar . Sentence 2:While the Tsar remained ever pure in the eyes of the people , popular opinion held that his advisors exercised an evil influence over him .

Answer: PAIR_NONE


Question: Sentence 1:The central spire rises to a height of 201 feet ( 61 m ) , and the tower on which it stands is square in shape and was patterned on the lines of the 12th - century Canterbury Cathedral , England . Sentence 2:nan

Answer:
SINGLE_S_COORD_ANAPHORA