8096
The achieved results demonstrate that the crystallization behavior and E-modulus of polypropylene play significant roles for warp deformation in extrusion-based 3D printed parts .
 concept or principle: crystallization; material: polypropylene; concept or principle: deformation; application: 3D printed parts
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: crystallization, polypropylene, deformation, 3D printed parts 
Answer:
 concept or principle: crystallization; material: polypropylene; concept or principle: deformation; application: 3D printed parts