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In this work , a three-dimensional thermo-elastic-plastic model is proposed to predict the thermomechanical behavior in the laser engineered net shaping ( LENS ) process of Ti-6Al-4V using Finite Element Method ( FEM ) .
 concept or principle: three-dimensional; concept or principle: model; concept or principle: thermomechanical; manufacturing process: laser engineered net shaping; manufacturing process: LENS; concept or principle: process; material: Ti-6Al-4V; concept or principle: Finite Element Method; concept or principle: FEM
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: three-dimensional, model, thermomechanical, laser engineered net shaping, LENS, process, Ti-6Al-4V, Finite Element Method, FEM 
Answer:
 concept or principle: three-dimensional; concept or principle: model; concept or principle: thermomechanical; manufacturing process: laser engineered net shaping; manufacturing process: LENS; concept or principle: process; material: Ti-6Al-4V; concept or principle: Finite Element Method; concept or principle: FEM