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:La Tribuna ( in Spanish ) . Sentence 2:2009 - 11 - 02 .
PAIR_NONE

Sentence 1:Milan then fell under the lordship of Sforza , whom Colleoni served for a time , but in 1448 he took leave of Sforza and returned to the Venetians . Sentence 2:nan
SINGLE_RELATIVE

Sentence 1:Bernard reluctantly attempts to call the son of his mother 's employer , with whom he 'd had a sexual encounter as a teenager , while Emory calls a dentist on whom he 'd had a crush while in high school . Sentence 2:nan

SINGLE_CONN_INNER_ANAPHORA