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'.

Ex Input:
Sentence 1:Marriott was then able to track important metrics and provide superior customer service . Sentence 2:Additionally , Fairfield Inn placed a heavy emphasis on quality personnel selection to find friendly and positive staff that would also help reduce turnover .

Ex Output:
PAIR_CONN_ANAPHORA


Ex Input:
Sentence 1:Thus the Cnossians , in short time , not only lost most of their allies , but also their hegemony over the island . Sentence 2:Nevertheless they were still able to assist the Aetolian allies with 1000 archers in their war on the continent .

Ex Output:
PAIR_CONN_ANAPHORA


Ex Input:
Sentence 1:Fabrice also receives a one on one date , because he scored the fewest baskets . Sentence 2:nan

Ex Output:

SINGLE_CONN_INNER_ANAPHORA