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 Input:
Sentence 1:As the Delaware companies do not have to reveal their owners the exact ownership of the club is therefore unknown but Steve Parish confirmed that each of Harris and Blitzer had an 18 % share to match his own . Sentence 2:nan

Ex Output:
SINGLE_S_COORD


Ex Input:
Sentence 1:16th - century , Persian historian , Firishta , recorded a tradition that Delhi or Dilli was founded by a Raja Dhilu before the Yavana ( Greek ) invasions . Sentence 2:However , it should be noted that the kings then referred to the initial Muslim invaders as Yavanas .

Ex Output:
PAIR_CONN_ANAPHORA


Ex Input:
Sentence 1:Visiting Tom 's grave , Alice finds a note left by Doug which reveals the killer to be Alice 's friend Marlena Evans . Sentence 2:nan

Ex Output:

SINGLE_CATAPHORA