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:Carriers of the gene , who are healthy and normal , can be identified by a DNA test . Sentence 2:nan

Answer: SINGLE_RELATIVE


Question: Sentence 1:Ehrlich bet that the prices for five metals would increase over a decade , while Simon took the opposite stance . Sentence 2:nan

Answer: SINGLE_CONN_INNER


Question: Sentence 1:Ghinzani , who was also very lucky not to hit Martini , limped away from his broken Osella and Grand Prix racing having banged his ankle on the cars monocoque . Sentence 2:nan

Answer:
SINGLE_RELATIVE