1796
All these need to be carefully studied before AM materials can be released to the market .
 material: be; material: AM materials; material: be
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: be, AM materials, be 
Answer:
 material: be; material: AM materials; material: be