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:The Fe ( II ) - O-O - BH4 bridge is subsequently formed . Sentence 2:On the other hand , formation of this bridge has been modeled assuming that BH4 is located in iron 's first coordination shell and that the iron is not coordinated to any water molecules .
[EX A]: on the other hand

[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:I was n't booking anything . Sentence 2:Finally , I thought , ' Is this for me ?
[EX A]:
finally