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:Although cryoseisms release less energy than most tectonic events , they can still cause damage or significant changes to an affected area . Sentence 2:nan

A: SINGLE_CONN_START
****
Q: Sentence 1:Although municipal elections are local only , and local results vary , they do function as a measure of the sentiments and party strengths also nationally . Sentence 2:nan

A: SINGLE_CONN_START
****
Q: Sentence 1:Crossing under the B6166 , which follows the course of the Fosse Way Roman road at this point , the Devon joins the River Trent . Sentence 2:nan

A:
SINGLE_RELATIVE
****