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'.

Sentence 1:Edy then travels to his store , a small neighborhood supermarket , called Bodega . Sentence 2:nan
SINGLE_APPOSITION

Sentence 1:Carriers of the gene , who are healthy and normal , can be identified by a DNA test . Sentence 2:nan
SINGLE_RELATIVE

Sentence 1:Since the film uses footage from the Theda Bara star vehicle Madame Mystery ( released April 1926 ) , it is also the last screen appearance of silent film vamp Bara . Sentence 2:nan

SINGLE_CONN_START