What is the relationship between Stratasys and 3D printing in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

That's because when fellow 3D printing bigwig Stratasys reported its quarterly results last week, it withdrew its full-year 2015 guidance, citing lack of visibility into customer demand, and issued a third-quarter outlook that fell significantly short of what analysts were forecasting.

Answer: product_or_material_produced