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:Another type of a stronger alcoholic drink is called langkau , which contains a higher alcohol content because it is actually made of tuak which has been distilled over fire to boil off the alcohol , cooled and collected into containers . Sentence 2:nan
answer:
SINGLE_RELATIVE


question:
Sentence 1:The forest area of the reserve has tropical deciduous vegetation and it can be classified into Northern Tropical Moist Deciduous and Southern Dry Mixed Deciduous forests . Sentence 2:nan
answer:
SINGLE_S_COORD_ANAPHORA


question:
Sentence 1:In systemic lupus there are autoantibodies to DNA , which can not evoke a T cell response , and limited evidence for T cell responses implicates nucleoprotein antigens . Sentence 2:nan
answer:

SINGLE_RELATIVE