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: Consider Input: Sentence 1:The AV receiver is classified as an audio frequency electronic amplifier . Sentence 2:But with the rapid addition of several features , AV receivers now generally have significant additional functionality .

Output: but


Input: Consider Input: Sentence 1:The mechanisms for infection , proliferation , and persistence of a virus in cells of the host are crucial for its survival . Sentence 2:For example , some diseases such as measles employ a strategy whereby it must spread to a series of hosts .

Output: for example


Input: Consider Input: Sentence 1:In March 2007 Michael Raum was assigned to the BBDO Worldwide Board with headquarters in New York City . Sentence 2:Furthermore , he is represented in various economic boards .


Output: furthermore