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:Most changes are minor , adding or removing only a few base pairs of DNA . Sentence 2:For example , the WS202 release of WormBase ( April 2009 ) added two base pairs to the genome sequence .
Example Output: for example

Example Input: Sentence 1:In 1492 additional documentation was collected for submission to Pope Innocent VIII with the intention of having Algotsson canonized in 1498 . Sentence 2:But Innocent VIII 's death in 1492 hindered this to a significant degree .
Example Output: but

Example Input: Sentence 1:They were not written down at first , I made them up as I went along . Sentence 2:But I had to tell them so often , carefully using the same words , that both he and I soon knew them by heart .
Example Output:
but

