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:Matthews scored 20 points against North Florida in his first game at Michigan on November 11 , 2017 . Sentence 2:In the game , he and Duncan Robinson became the first Michigan teammates to score 20 points in a game since March 3 , 2015 .
PAIR_ANAPHORA

Sentence 1:Mallory and Bullock suggested names for the many topographical features they discovered and these were endorsed by the expedition and passed to Charles Bell , Britain 's special ambassador to Lhasa , for approval . Sentence 2:nan
SINGLE_APPOSITION

Sentence 1:It is of low mammalian toxicity and is non-toxic to bees . Sentence 2:However , it is used in many products which also contain insecticides .

PAIR_CONN