instruction:
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'.
question:
Sentence 1:Friends and colleagues met Williams in Europe , with the last meetings occurring in the mid 1970s in Salzburg , Austria . Sentence 2:In 1972 , he accepted and then later declined a post at the Latter Day Saints Hospital in Salt Lake City Utah , United States .
answer:
PAIR_ANAPHORA


question:
Sentence 1:However , in retrospect the Marquette poll accurately reflected the Wisconsin electorate 's vote . Sentence 2:However , the same poll showed President Obama holding a lead over Mitt Romney 51 - 43 .
answer:
PAIR_CONN


question:
Sentence 1:He is one of Vic Mackey 's main rivals , although on occasions they forged uneasy alliances for their mutual benefit . Sentence 2:nan
answer:

SINGLE_CONN_INNER_ANAPHORA