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'.
--------
Question: Sentence 1:Foo.secondlifeherald.com. 2010 - 02 - 04 . Sentence 2:Retrieved 2013 - 12 - 14 .

Answer: PAIR_NONE


Question: Sentence 1:Principal photography took place in Algiers at actor Jacques Perrin 's suggestion , which the filmmakers approved for its Mediterranean environment and because the Ministry of Culture was accommodating . Sentence 2:nan

Answer: SINGLE_CONN_INNER


Question: Sentence 1:Although fearing being caught , Nina cleverly frames Vasili , the KGB Rezident , with some help from Stan . Sentence 2:nan

Answer:
SINGLE_CONN_START