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'.

[Q]: Sentence 1:At the first IPC Alpine Skiing World Cup event in the 2008/2009 ski season , which was held at La Molina in Spain , Boira finished fourth overall . Sentence 2:nan
[A]: SINGLE_RELATIVE


[Q]: Sentence 1:Mart Stam , who worked during 1926 as employee - designer at the Brinkman & Van der Vlugt office in Rotterdam , came in contact with the Russian Avant - Garde in 1922 in Berlin . Sentence 2:nan
[A]: SINGLE_RELATIVE


[Q]: Sentence 1:There was some controversy about the injury , because OTAs are supposed to be non-contact . Sentence 2:nan
[A]:
SINGLE_CONN_INNER