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:In the position at left , White to play will apparently be obliged to retreat the knight from f5 , because the squares to which it could advance are all guarded . Sentence 2:However , the interference move 1. Nd6+ interrupts the black rook 's defense of the black queen .
Example Output: however

Example Input: Sentence 1:Both peptides are known to specifically block the Kv3. 4 potassium channel , and thus bring about a decrease in blood pressure . Sentence 2:Moreover , they inhibit the cytopathic effects of mouse hepatitis virus strain MHV - A59 on mouse liver cells , by an unknown mechanism .
Example Output: moreover

Example Input: Sentence 1:The supporters of Fluminense Football Club are usually related to the upper classes of Rio de Janeiro . Sentence 2:However , the popularity of the club reaches beyond the city limits .
Example Output:
however