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:These small howitzers provided artillery support for mobile military forces where it would otherwise be unavailable . Sentence 2:However , their shorter range made them unsuitable for dueling with other heavier field artillery weapons .

A: however
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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 .

A: for example
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Q: Sentence 1:This is supported by the fact that VLDLR is primarily expressed in the cortical plate adjacent to reelin - expressing cells , Cajal -- Retzius cells , and in the intermediate zone . Sentence 2:However , definitive evidence has not yet been found .

A:
however
****