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:Although Eastwood was able to convince Siegel not to have Callahan toss the badge , when the scene was filmed , Eastwood changed his mind and went with Siegel 's preferred ending . Sentence 2:nan

SOLUTION: SINGLE_CONN_START

PROBLEM: Sentence 1:Calvi told Mojo magazine that whereas Anna Calvi was recorded on and off over three years . Sentence 2:nan

SOLUTION: SINGLE_CONN_INNER_ANAPHORA

PROBLEM: Sentence 1:SIFT - MS was initially developed for use in human breath analysis , and has shown great promise as a non-invasive tool for physiological monitoring and disease diagnosis . Sentence 2:nan

SOLUTION:
SINGLE_VP_COORD