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:Chris reveals that he is a serial killer of women , and explains that he let Anne go on the night they met because he admired her tenacity . Sentence 2:nan

A: SINGLE_CONN_INNER_ANAPHORA
****
Q: Sentence 1:The Greek captain , Apostolos Mangouras , reported a loud bang from the starboard side and as the ship began to take on water from high waves the engines shut down and he called for help from Spanish rescue workers . Sentence 2:nan

A: SINGLE_S_COORD_ANAPHORA
****
Q: Sentence 1:Introduced in The Practice , Sally began a relationship with Alan that crossed over into Boston Legal . Sentence 2:However , after he used her to get information from a witness against their client so they could suppress his testimony , she broke up with him .

A:
PAIR_CONN_ANAPHORA
****