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'.

Example Input: Sentence 1:Strong , who had known Pico since 1867 , purchased the property and had it restored in 1909 . Sentence 2:nan
Example Output: SINGLE_RELATIVE

Example Input: Sentence 1:This was at the time Germany 's highest placement at Eurovision . Sentence 2:The German jury awarded its highest mark of 4 to the United Kingdom .
Example Output: PAIR_ANAPHORA

Example Input: Sentence 1:Running his Sharadha Kala Niketanaya , he endeavoured to teach , develop and popularise Indian classical music in Sri Lanka for the last forty years . Sentence 2:nan
Example Output:
SINGLE_CATAPHORA

