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:In Saccharomyces cerevisiae ( Baker 's yeast ) , the transcriptional regulation of the INO1 gene encoding inositol - 3 - phosphate synthase has been studied in detail and its expression is sensitive to the availability of phospholipid precursors as well as growth phase . Sentence 2:nan

Ex Output:
SINGLE_S_COORD_ANAPHORA


Ex Input:
Sentence 1:During Walsall 's 2 -- 1 victory at Leeds United on 16 February 2010 he picked up a hamstring injury and he returned to the team after entering a 2 -- 0 defeat at Leyton Orient on 13 March as a 77th - minute substitute . Sentence 2:nan

Ex Output:
SINGLE_S_COORD


Ex Input:
Sentence 1:The 1945 Connecticut Huskies football team represented the University of Connecticut in the 1945 college football season . Sentence 2:The Huskies were led by 11th - year head coach J. Orlean Christian and completed the season with a record of 7 -- 1 .

Ex Output:

PAIR_ANAPHORA