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'.
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Question: Sentence 1:Ricky 's receding hairline is giving him much concern , so Lucy decides to give him painful scalp treatments . Sentence 2:nan

Answer: SINGLE_S_COORD_ANAPHORA


Question: Sentence 1:A few years later another merger was attempted as the Country - National Organisation but this failed within a few years . Sentence 2:nan

Answer: SINGLE_S_COORD


Question: Sentence 1:Two armoured divisions and a motorised division , which had been interspersed among the German formations , thought they would be allowed to retire gracefully with Rommel 's 21st , 15th and 19th ( sic ) light . Sentence 2:But even that was denied them .

Answer:
PAIR_CONN