instruction:
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'.
question:
Sentence 1:On 30 November 1967 , the state of South Yemen was formed , comprising Aden and the former Protectorate of South Arabia . Sentence 2:This socialist state was later officially known as the People 's Democratic Republic of Yemen and a programme of nationalisation was begun .
answer:
PAIR_ANAPHORA


question:
Sentence 1:Little is known about his life , but according to tradition he was a companion of Saint Oswald at Iona . Sentence 2:nan
answer:
SINGLE_S_COORD


question:
Sentence 1:Although she said that she could not specialize in African - American types , Fuller became one of the most effective chroniclers of the black experience within the United States . Sentence 2:nan
answer:

SINGLE_CONN_START