Detailed Instructions: 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.
Problem:Sentence 1:A group of hand surgeons realized in the 1970s that the level of injury did not predict the number of available muscles in the upper limb very well . Sentence 2:Therefore , the international classification was established in 1979 , at the Edinburgh meeting .
Solution:
therefore