5
The need to increase the number of parts in a product fabricated by AM may be due to many reasons : printability , productivity , functionality , artistry , and interchangeability .
 concept or principle: fabricated; manufacturing process: AM; material: be; process parameter: printability; concept or principle: productivity
Please list all entity words in the text that fit the category.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} 
Answer:
 concept or principle: fabricated; manufacturing process: AM; material: be; process parameter: printability; concept or principle: productivity