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Flow control is a major contributor to accuracy of parts manufactured additively with material extrusion and a precise filament feed rate is therefore essential .
 process characterization: accuracy; concept or principle: manufactured; manufacturing process: material extrusion; material: filament; process parameter: feed
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: accuracy, manufactured, material extrusion, filament, feed 
Answer:
 process characterization: accuracy; concept or principle: manufactured; manufacturing process: material extrusion; material: filament; process parameter: feed