In this task, you are given two sentences in the English language (Sentence 1 and Sentence 2). Your task is to identify the connecting word between the two sentences.

[EX Q]: Sentence 1:All trace of that entrance has vanished , for the whole southwestern section of the walls underwent many extensive alterations over the centuries . Sentence 2:However , that stretch of wall appeared in a print produced in the 18th century .
[EX A]: however

[EX Q]: Sentence 1:Her family believed that her tooth was sore because of witchcraft , and she was ordered to go to bed . Sentence 2:However , when she fell asleep , she did not wake up .
[EX A]: however

[EX Q]: Sentence 1:Furthermore , in terms of de facto segregation , despite eliminating racially exclusionary policies , many white Greek life organizations failed to actively pursue and promote new members of color . Sentence 2:Therefore , lack of diversity within Greek Life organizations remains relatively unchanged .
[EX A]:
therefore