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'.

[EX Q]: Sentence 1:She calls out to Joe but he ignores her , heading towards the house . Sentence 2:nan
[EX A]: SINGLE_S_COORD_ANAPHORA

[EX Q]: Sentence 1:Canal locks often attract spectators , including gongoozlers , because the operation of manual canal locks is a complex affair . Sentence 2:nan
[EX A]: SINGLE_CONN_INNER

[EX Q]: Sentence 1:Hatfield left JPL in 1974 and the JPLDIS project was assigned to Jeb Long , another programmer at JPL , who added many advanced features plus a programming language . Sentence 2:nan
[EX A]:
SINGLE_APPOSITION