97
The presented model could be very helpful for optimizing the additive process without carrying out a large number of experiments in a common trial-and-error method , developing process parameters for new materials , and assessing novel modalities of powder bed fusion additive manufacturing .
 concept or principle: model; material: be; material: additive; concept or principle: trial-and-error; concept or principle: process parameters; concept or principle: materials; manufacturing process: powder bed fusion additive manufacturing
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: model, be, additive, trial-and-error, process parameters, materials, powder bed fusion additive manufacturing 
Answer:
 concept or principle: model; material: be; material: additive; concept or principle: trial-and-error; concept or principle: process parameters; concept or principle: materials; manufacturing process: powder bed fusion additive manufacturing