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:Since there are many potential gene targets , they continually utilize bioinformatics methods to winnow down and determine which are most relevant . Sentence 2:nan

A: SINGLE_CONN_START
****
Q: Sentence 1:He is also a partner of Burlywood Capital . Sentence 2:Additionally , he is the President of the Tourism Alliance , and the Institute of Hospitality .

A: PAIR_CONN_ANAPHORA
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Q: Sentence 1:The towns ' population 's has been steadily decreasing as residents leave their homes for better job opportunities elsewhere . Sentence 2:However , a fish plant in Sandy Cove is still operating and serving neighbouring communities .

A:
PAIR_CONN
****