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:the taxation treatment in Australia is more favourable to investors than is the case in other countries . Sentence 2:In particular , the following areas appear worthy of further study by the Productivity Commission :

Ex Output:
in particular

Ex Input:
Sentence 1:It is presumed to have a large population , and generally lives within the confines of protected areas . Sentence 2:Therefore , it is unlikely to decline at the rate needed to be listed as an endangered species .

Ex Output:
therefore

Ex Input:
Sentence 1:On the overground parts of the network trams drive at sight , while the underground premetro sections have block signalling . Sentence 2:However drivers do not need to check in and out of the signalled section as on the Muni system in San Francisco .

Ex Output:
however