6004
Considered parameters included the extrusion temperature , horizontal speed , in-situ applied hot end voltage , and bed material .
 concept or principle: parameters; manufacturing process: extrusion; concept or principle: in-situ; machine or equipment: hot end; machine or equipment: bed
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: parameters, extrusion, in-situ, hot end, bed 
Answer:
 concept or principle: parameters; manufacturing process: extrusion; concept or principle: in-situ; machine or equipment: hot end; machine or equipment: bed