6641
The nearly continuous reinforcement did not restrict the mobility of the printer , unlike the reported performance of the continuously reinforced carbon fiber thermoplastics in FFF .
 reinforcement, printer, performance, reinforced, carbon fiber, FFF
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 reinforcement, printer, performance, reinforced, carbon fiber, FFF