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'.

Q: Sentence 1:If Chinlestegophis is indeed both an advanced stereospondyl and a relative of caecilians , this means that although all lissamphibians are descended from temnospondyls . Sentence 2:nan

A: SINGLE_CONN_INNER
****
Q: Sentence 1:Jackie returned to find the Franchetti mob taken over by Frankie 's cousin , Paulie . Sentence 2:Paulie was able to discover Jackie 's secret , and Paulie blackmailed Jackie into doing hits for him .

A: PAIR_ANAPHORA
****
Q: Sentence 1:The legislature held a special session in 1898 , from September 26 to October 15 . Sentence 2:During that session , Simon was chosen as U.S. Senator , filling a seat that had been vacant for nearly two years .

A:
PAIR_NONE
****