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.

MakerBot's performance Over the last two quarters, MakerBot's performance has become a sensitive subject for Stratasys because the consumer 3D printing unit's revenue growth rate has fallen off a cliff since the third quarter of last year: Source: Stratasys
product_or_material_produced