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:Kuwait experiences colder weather because it is situated farther north . Sentence 2:nan

Answer: SINGLE_CONN_INNER_ANAPHORA


Question: Sentence 1:They stop at an isolated gas station , where she hears him asking the clerk for directions , although he claimed to have driven the route many times . Sentence 2:nan

Answer: SINGLE_CONN_INNER


Question: Sentence 1:The presence of nitrogen dioxide is necessary for the reaction to proceed at a reasonable rate . Sentence 2:The process is highly exothermic , and a major consideration of the design of the chambers was to provide a way to dissipate the heat formed in the reactions .

Answer:
PAIR_NONE