1392
The entered range 3D printers are predominantly based on Fused Deposition Modeling ( FDM ) technology , but more recently machines derived from stereolithography have entered the market due to expiring patents .
 process parameter: range; machine or equipment: 3D printers; manufacturing process: Fused Deposition Modeling; manufacturing process: FDM; concept or principle: technology; machine or equipment: machines; manufacturing process: stereolithography; concept or principle: patents
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 process parameter: range; machine or equipment: 3D printers; manufacturing process: Fused Deposition Modeling; manufacturing process: FDM; concept or principle: technology; machine or equipment: machines; manufacturing process: stereolithography; concept or principle: patents