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:Meanwhile , Lt. Wahyu and Dagu confront Tama after killing off his remaining henchman . Sentence 2:However , Lt. Wahyu ends up betraying Dagu by shooting him in the face before taking Tama hostage , intending to use him as a shield to escape .
Example Output: however

Example Input: Sentence 1:When Toothy is drilling , the drill 's battery goes dead , much to his disappointment . Sentence 2:However , after Toothy managed to get another battery .
Example Output: however

Example Input: Sentence 1:The Fe ( II ) - O-O - BH4 bridge is subsequently formed . Sentence 2:On the other hand , formation of this bridge has been modeled assuming that BH4 is located in iron 's first coordination shell and that the iron is not coordinated to any water molecules .
Example Output:
on the other hand