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:His father died in 1891 , so his mother took her four children and moved with her parents to Berea . Sentence 2:nan

SOLUTION: SINGLE_S_COORD

PROBLEM: Sentence 1:In some situations , they have been accompanied , or followed , by civil unrest and armed rebellion . Sentence 2:nan

SOLUTION: SINGLE_VP_COORD

PROBLEM: Sentence 1:Including the previous incarnations as the Home Nations and Five Nations , this was the seventy - sixth series of the northern hemisphere rugby union championship . Sentence 2:nan

SOLUTION:
SINGLE_CATAPHORA