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:Inveneo , the company that NetHope tapped to build the network , defended the action by saying that in the days after the earthquake it was critical for NGOs to have reliable connectivity in order to coordinate their actions using resources such as Google Maps . Sentence 2:nan

Output: SINGLE_APPOSITION


Input: Consider Input: Sentence 1:Meanwhile , Carly tutors Spencer 's nemesis Chuck in math , and Spencer tries to prove to Carly how evil Chuck really is . Sentence 2:nan

Output: SINGLE_S_COORD


Input: Consider Input: Sentence 1:Allegedly , Suresh Singh had him poisoned both to avenge the murder of BP Sinha and so that Suresh could become the undisputed coal king of Dhanbad . Sentence 2:nan


Output: SINGLE_CONN_INNER_ANAPHORA