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:Following at the rear of the 12th ( Yorkshire ) Parachute Battalion , they arrived at Le Bas de Ranville . Sentence 2:nan

Output: SINGLE_CATAPHORA


Input: Consider Input: Sentence 1:Since the Lampropholis delicata species is not native to the area in which they are found , it is possible that the resulting morphs are caused by the exposure to a new environment and climate as this particular species ' activity level is temperature dependent . Sentence 2:nan

Output: SINGLE_CONN_START


Input: Consider Input: Sentence 1:Pop singer Pat Boone appears in one episode as himself , under the premise that he hails from the same area of the country as the Clampetts , although Boone is a native of Jacksonville . Sentence 2:nan


Output: SINGLE_CONN_INNER_ANAPHORA