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.

Sentence 1:Such a restriction lowers the proof - theoretic strength of the system significantly . Sentence 2:For example , the system ACA described below is equiconsistent with Peano arithmetic .
for example

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 .
for example

Sentence 1:As Sakuragi is reading the letter , he finds Rukawa training in the beach as he joined the All Japan training camp . Sentence 2:Meanwhile , Sakuragi is still in rehabilitation in order to heal his spine so he can continue playing basketball .

meanwhile