instruction:
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'.
question:
Sentence 1:Beginning on January 30 , 1951 , Dodd led his platoon against Hill 256 , a strongly defended position near Subuk , Korea , as part of Operation Thunderbolt . Sentence 2:nan
answer:
SINGLE_CATAPHORA


question:
Sentence 1:The reaction is specific for glucose , as occurs in all enzymatic reactions , but it can provide some false positive results due to the presence of traces of strong oxidising agents or peroxide from disinfectants used on laboratory instruments . Sentence 2:nan
answer:
SINGLE_S_COORD_ANAPHORA


question:
Sentence 1:He claimed that on 25 March 1981 , he had received a telephone call in which Semerari begged for help because he was in Naples and in danger of being murdered . Sentence 2:nan
answer:

SINGLE_CONN_INNER_ANAPHORA