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: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
SINGLE_CONN_START

Sentence 1:Neuroblastoma is an aggressive cancer of immature neuroblastic cells ( precursors of neurons ) , and is one of the most common pediatric cancers , with a median age at diagnosis of two years . Sentence 2:nan
SINGLE_S_COORD

Sentence 1:Even after his unbelievable win against Tonegawa , Kaiji does n't feel satisfied unless he beats the chairman . Sentence 2:nan

SINGLE_CONN_INNER_ANAPHORA