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 Q]: Sentence 1:Although rainfall is evenly spread throughout the year , it is more common in spring ( April -- May ) and autumn ( September -- November ) . Sentence 2:nan
[EX A]: SINGLE_CONN_START

[EX Q]: Sentence 1:Ghinzani , who was also very lucky not to hit Martini , limped away from his broken Osella and Grand Prix racing having banged his ankle on the cars monocoque . Sentence 2:nan
[EX A]: SINGLE_RELATIVE

[EX Q]: Sentence 1:Kieselguhr , a fine powder of diatomaceous earth , can be introduced into the beer and circulated through screens to form a filtration bed . Sentence 2:nan
[EX A]:
SINGLE_APPOSITION