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 seventh wall contained the Citadel with the white Tower of Ecthelion , which was 300 ft ( 91 m ) high , so that its pinnacle was one thousand feet ( 300 m ) above the plain . Sentence 2:nan

SOLUTION: SINGLE_RELATIVE

PROBLEM: Sentence 1:As with the Olympic emblem , the Paralympic emblem was designed so that it could also be rendered in two - and three - dimensional versions . Sentence 2:nan

SOLUTION: SINGLE_CONN_INNER_ANAPHORA

PROBLEM: Sentence 1:Although there has been a degree of diversification of the town 's industries , Widnes remains a major manufacturer of chemicals . Sentence 2:nan

SOLUTION:
SINGLE_CONN_START