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:Constantine was appointed to the BBC 's General Advisory Committee in 1966 and became a BBC Governor two years later , although declining health restricted his involvement . Sentence 2:nan

A: SINGLE_CONN_INNER_ANAPHORA
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Q: Sentence 1:Harold tries , but Farrell makes a fool of him , then has him tied up . Sentence 2:Harold 's sworn enemy , Hank Hooper , pelts him and accidentally starts a fire that consumes the medicine show wagon .

A: PAIR_ANAPHORA
****
Q: Sentence 1:Following Neptune Bank 's commissioning there was a rapid increase in the demand for electricity , which could n't be met by the station , and so in 1904 NESCo commissioned Carville Power Station . Sentence 2:nan

A:
SINGLE_RELATIVE
****