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.

Example Input: Sentence 1:The collector current does not remain constant with variation in temperature or power supply voltage . Sentence 2:Therefore , the operating point is unstable .
Example Output: therefore

Example Input: Sentence 1:He left his full - time post in 1983 to pursue a career in academia . Sentence 2:However , he maintained his link with industry through freelance consultancy and membership of several professional bodies .
Example Output: however

Example Input: Sentence 1:basically listening to Dinah Washington , Billie Holiday , and Frank Sinatra . Sentence 2:But also a lot of piano players , such as Bill Evans , Oscar Peterson and Erroll Garner , those were my mother 's favorites .
Example Output:
but