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 Q]: Sentence 1:Fouling is ubiquitous and generates tremendous operational losses , not unlike corrosion . Sentence 2:For example , one estimate puts the losses due to fouling of heat exchangers in industrialized nations to be about 0.25 % of their GDP .
[EX A]: for example

[EX Q]: Sentence 1:This contributed to a 50 - year industrial decline in the former three regions from which they have not yet recovered . Sentence 2:Meanwhile , large numbers of workers moved South to seek employment with defense firms .
[EX A]: meanwhile

[EX Q]: Sentence 1:Most species use a pulling or snapping behavior . Sentence 2:However , only D. aeneus and D. wrighti use biting as a delivery mechanism .
[EX A]:
however