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'.

Sentence 1:Once again he does not have to face Asashoryu , who withdraws on Day 10 , prompting speculation about his possible retirement . Sentence 2:nan
SINGLE_RELATIVE

Sentence 1:With the loss , the Seahawks dropped to 2 -- 3 . Sentence 2:Additionally , they dropped to 0 -- 2 in overtime games ( losing both by game -- winning field goals ) .
PAIR_CONN_ANAPHORA

Sentence 1:Although many options are technically possible , some , such as deep water sinking , are not used for non-military vessels , or have come under increased scrutiny . Sentence 2:nan

SINGLE_VP_COORD