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: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

SOLUTION: SINGLE_CONN_START

PROBLEM: Sentence 1:Functional MRI scans of other studies suggest that rhyming behavior is produced in the left hemisphere , but Mendez proposed that hyperactive electrical activity of the right hemisphere may induce a release of writing and rhyming abilities in the left hemisphere . Sentence 2:nan

SOLUTION: SINGLE_S_COORD

PROBLEM: Sentence 1:Seeking the power of the Flash so that he can restore history according to his own vision rather than another , Sinestro cuts off Abin 's hand , severing his connection with his ring . Sentence 2:nan

SOLUTION:
SINGLE_CATAPHORA