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:Content is free of charge for professionals and others . Sentence 2:but registration is required .
[EX A]: but

[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:Levin 's works are mainly in the revival of the Classical Realism and representational painting tradition . Sentence 2:However , she works in a range of genres and takes commissions for portraits and still life paintings .
[EX A]:
however