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:Although he studied painting and drawing in the 1970s and 1980s , he is a self - taught sculptor who began showing his work regularly in 2000 . Sentence 2:nan

Answer: SINGLE_CONN_START


Question: Sentence 1:Describing these elements as functions of design , he argues the urban designer should be aware of these elements and use them as tools when developing a ' design idea ' of what the city or place ought to look like . Sentence 2:nan

Answer: SINGLE_CATAPHORA


Question: Sentence 1:Durgapur is by far the most industrialised city in eastern India and the second planned city in India . Sentence 2:It started with the first prime minister of independent India , Jawaharlal Nehru .

Answer:
PAIR_ANAPHORA


