Definition: 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.
Input: Sentence 1:In the worst case , bisphosphonates may lead to osteonecrosis of the auditory canal itself . Sentence 2:Finally , neither approach has been proven to be beneficial after the commonly preferred method of surgery has been undertaken .
Output:
finally