Definition: 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.
Input: Sentence 1:This design allows the vertical misalignment to be about 20 cm with a 50 % power efficiency . Sentence 2:However , the U shaped cores also require return cables which bumps up the cost of production .
Output:
however