7495
It is hypothesized that increasing the fibre length in short fibre filament is expected to lead to increased mechanical properties , potentially approaching those of continuous fibre composites , whilst keeping the high degree of design freedom of the FFF process .
 concept or principle: fibre length; material: fibre filament; material: lead; concept or principle: mechanical properties; material: continuous fibre composites; concept or principle: degree of design freedom; manufacturing process: FFF
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: fibre length, fibre filament, lead, mechanical properties, continuous fibre composites, degree of design freedom, FFF 
Answer:
 concept or principle: fibre length; material: fibre filament; material: lead; concept or principle: mechanical properties; material: continuous fibre composites; concept or principle: degree of design freedom; manufacturing process: FFF