8696
The polymer melts inside the hot-end channel and flows under the pressure generated by the filament feeding force .
 material: polymer melts; application: channel; concept or principle: pressure; material: filament; concept or principle: force
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: polymer melts, channel, pressure, filament, force 
Answer:
 material: polymer melts; application: channel; concept or principle: pressure; material: filament; concept or principle: force