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: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:Ross was widely known as a lecturer and institute instructor . Sentence 2:He was president of Capitol College in Columbus which was renamed Dominion University when it relocated to Westerville Ohio .

Answer: PAIR_ANAPHORA


Question: Sentence 1:Restricted from holding political office due to property qualifications , their ability to vote at the mercy of the courts which were controlled by the slave - holding planters , poor whites had few advocates within the political system or the dominant social hierarchy . Sentence 2:nan

Answer:
SINGLE_APPOSITION