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:Although Prescott and senior Tyler Russell had shared quarterback duties throughout the regular season , Prescott had the job to himself in the Liberty Bowl while Russell recovered from surgery to repair a torn labrum in his throwing shoulder . Sentence 2:nan

Answer: SINGLE_CONN_START


Question: Sentence 1:A server becomes a candidate if it receives no communication by the leader over a period called the election timeout , so it assumes there is no acting leader anymore . Sentence 2:nan

Answer: SINGLE_S_COORD_ANAPHORA


Question: Sentence 1:Struggling financially , Dan decides to join the military and fight in World War I. Marie worries about him constantly . Sentence 2:nan

Answer:
SINGLE_CATAPHORA