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'.

Input: Consider Input: Sentence 1:Psu.com. 2003 - 12 - 10 . Sentence 2:Archived from the original on 2013 - 05 - 07 .

Output: PAIR_NONE


Input: Consider Input: Sentence 1:Her sire Whiskey was a successful racehorse before breaking down in a race at Lewes . Sentence 2:At stud he sired 148 winners including The Derby winner Eleanor and the dams of the Derby winners Phantom and Priam .

Output: PAIR_NONE


Input: Consider Input: Sentence 1:There is also evidence which suggests the function of dystroglycan as a part of the signal transduction pathway because it is shown that Grb2 , a mediator of the Ras - related signal pathway , can interact with the cytoplasmic domain of dystroglycan . Sentence 2:nan


Output: SINGLE_APPOSITION