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In addition , a fabricated hollow quadrangular pyramid with a closed shape was machined with a computer numerical control ( CNC ) machine tool with the modification of the work origin .
 fabricated, machined, computer numerical control, CNC, machine tool
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 fabricated, machined, computer numerical control, CNC, machine tool