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:The common solution to this problem is to use an LR parser , which is a type of shift - reduce parser , and does bottom - up parsing . Sentence 2:nan

SOLUTION: SINGLE_RELATIVE

PROBLEM: Sentence 1:Principal photography took place in Algiers at actor Jacques Perrin 's suggestion , which the filmmakers approved for its Mediterranean environment and because the Ministry of Culture was accommodating . Sentence 2:nan

SOLUTION: SINGLE_CONN_INNER

PROBLEM: Sentence 1:In distress , she put into port at Montevideo , Uruguay , where she was surveyed and condemned . Sentence 2:However , she was sold locally in November 1871 , and subsequently was repaired and returned to service as Jaime Ciblis ( Uruguay ) .

SOLUTION:
PAIR_CONN