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.

[Q]: Sentence 1:It excludes problems with flow separation at sea level and increases efficiency of the engine in vacuum . Sentence 2:For example , application of nozzle extension for liquid rocket engine NK - 33 improves the value of specific impulse up to 15 - 20 sec for near - space conditions .
[A]: for example

[Q]: Sentence 1:This occurs east of the mountains down through the Mid Atlantic states . Sentence 2:Meanwhile , a Pacific storm slammed onto the California coast during the 11th and as it moved eastward , a new area of low pressure developed across southeastern Colorado and the Texas Panhandle .
[A]: meanwhile

[Q]: Sentence 1:He was born again . Sentence 2:But when he was re-educated into West German democracy , the Nazi remained a Nazi .
[A]:
but