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:The limestone contains marine fossils including crinoids , brachiopods , gastropods , horn corals , and bryozoans . Sentence 2:However , most of the fossils are too small for the human eye to detect .
[EX A]: PAIR_CONN

[EX Q]: Sentence 1:Although Eastwood was able to convince Siegel not to have Callahan toss the badge , when the scene was filmed , Eastwood changed his mind and went with Siegel 's preferred ending . Sentence 2:nan
[EX A]: SINGLE_CONN_START

[EX Q]: Sentence 1:One year later he was entered in the novitiate of the Redemptorists in Belgium , and there he cultivated to a high degree the spirit of lofty mystical piety which marked him through life . Sentence 2:nan
[EX A]:
SINGLE_S_COORD