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:A special cloud falls out of the sky and lands on Tinky Winky 's head . Sentence 2:Tinky Winky shows his special cloud to the others and they all think it is beautiful .
PAIR_ANAPHORA

Sentence 1:Growing up , she sang and took voice lessons and was often asked to sing solos . Sentence 2:nan
SINGLE_CATAPHORA

Sentence 1:Mayor Michael Bloomberg eliminated 169 of those jobs in 2003 . Sentence 2:However , in 2006 , Bloomberg increased the size of the agency , in the wake of the murder of Nixzmary Brown by her stepfather .

PAIR_CONN_ANAPHORA