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'.

Input: Consider Input: Sentence 1:Garza was driving in his car when he was chased and attacked by armed men in two other cars . Sentence 2:Garza attempted to escape but he was shot at 15 times in the city center at a garage owned by a relative .

Output: PAIR_ANAPHORA


Input: Consider Input: Sentence 1:Although the concept of ' compact city ' was coined by American writers , it has been used more in recent years by European and particularly British planners and academics . Sentence 2:nan

Output: SINGLE_CONN_START


Input: Consider Input: Sentence 1:In the aftermath of the war , which was accompanied by a harsh economic crisis in Armenia , President Ter - Petrosyan became unpopular . Sentence 2:nan


Output: SINGLE_RELATIVE