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 the house remained Samuel 's home until his death in 1893 , it was also a dormitory for students attending a school across the road during most of the 1870s . Sentence 2:nan

Answer: SINGLE_CONN_START


Question: Sentence 1:The two eastern platforms at Stapleton Road will be demolished to allow trains to run faster , although it has been suggested that they be kept for use in case of service disruptions . Sentence 2:nan

Answer: SINGLE_CONN_INNER_ANAPHORA


Question: Sentence 1:GM executives decided that engineering effort would best be spent on aerodynamics and chassis development . Sentence 2:They created a modern platform , so that when engine technology advanced , they would have a well - balanced package with acceleration , braking , handling , and aerodynamics .

Answer:
PAIR_ANAPHORA