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'.

Q: Sentence 1:Liz realizes that she needs to take control of her personal life by fixing up her dream apartment , but she encounters an obstacle along the way . Sentence 2:Meanwhile , Jack has his own problems to deal with when Avery is held hostage .

A: PAIR_CONN
****
Q: Sentence 1:Brian had two sisters : Pamela , who was born on 3 October 1943 and died on 14 October 1945 of leukemia ; and Barbara , born on 22 August 1946 . Sentence 2:nan

A: SINGLE_RELATIVE
****
Q: Sentence 1:The council required Eastern churches wishing to be reunited with Rome to accept the Filioque as a legitimate expression of the faith , while it did not require those Christians to change the recitation of the creed in their liturgy . Sentence 2:nan

A:
SINGLE_CONN_INNER_ANAPHORA
****