TASK DEFINITION: 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'.
PROBLEM: Sentence 1:Working at the ' home front ' during The Blitz , she spent many nights moving very ill children and babies from their beds to safer underground shelters . Sentence 2:nan

SOLUTION: SINGLE_CATAPHORA

PROBLEM: Sentence 1:At the same time , David manages to stab Collins in the arm with a scalpel , after which Collins runs away . Sentence 2:Meanwhile , Amshel captures Kai and takes him to Diva , who wants to make him a chevalier .

SOLUTION: PAIR_CONN_ANAPHORA

PROBLEM: Sentence 1:Artists ' impression of Giotto , the European Space Agency 's first interplanetary mission , launched in July 1985 . Sentence 2:nan

SOLUTION:
SINGLE_APPOSITION