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:By the mid-1990s , cricket was confined almost entirely to Lusaka , but the national side returned to play in the African Cricket Association Championships in 1994 . Sentence 2:nan

SOLUTION: SINGLE_S_COORD

PROBLEM: Sentence 1:During an uplink , the rover is told where to go , but not exactly how to get there . Sentence 2:Instead , the command contains the coordinates of waypoints toward a desired destination .

SOLUTION: PAIR_CONN

PROBLEM: Sentence 1:He intended the slightly bolder designs for white - on - black text , so they would look the same to a viewer as black - on - white . Sentence 2:nan

SOLUTION:
SINGLE_S_COORD_ANAPHORA