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 mine starts as an epidermal corridor , but later becomes a shallow tentiform mine . Sentence 2:In the end , the larva lives freely under a folded leaf tip .
Example Output: in the end

Example Input: Sentence 1:Nickelodeon was a failure and continually lost money due to weak advertising sales and its inability to compete against its more successful rival , Der Kinderkanal . Sentence 2:As a result , Nickelodeon closed on 31 May 1998 .
Example Output: as a result

Example Input: Sentence 1:Big cats that hunt nocturnally , such as lions , leopards and tigers , had never been extensively filmed doing so before . Sentence 2:But the latest infrared technology revealed behaviour that had previously been guessed at from evidence discovered the next day .
Example Output:
but