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'.
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Question: Sentence 1:Strong , who had known Pico since 1867 , purchased the property and had it restored in 1909 . Sentence 2:nan

Answer: SINGLE_RELATIVE


Question: Sentence 1:PA 436 was assigned in the 1928 numbering of roads in Pennsylvania and not paved until 1932 . Sentence 2:The road 's other lone major intersection on PA 436 is for Jefferson SR 3012 .

Answer: PAIR_ANAPHORA


Question: Sentence 1:Mordechai Omer also described Zaritsky 's use of light in his paintings and suggests that in these paintings the light is not perceived as a tonal problem . Sentence 2:In fact , Omer claims , Zaritsky left the objects in the paintings unnuanced. ( 12 )

Answer:
PAIR_CONN