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.

Ex Input:
Sentence 1:On systems or services using NTLM authentication , users ' passwords are never sent in cleartext over the wire . Sentence 2:Instead , they are provided to the requesting system , like a domain controller , as a hash in a response to a challenge - response authentication scheme .

Ex Output:
instead

Ex Input:
Sentence 1:Together they unravel a plot to target an army general with a genetically - engineered virus . Sentence 2:Meanwhile , Brian tries to learn more about Senator Eddie Morra , and draws a blank .

Ex Output:
meanwhile

Ex Input:
Sentence 1:Earlier Roman emperors persecuted Christians . Sentence 2:For example , see Diocletianic Persecution .

Ex Output:
for example