1972
Unfortunately , the lack of a proper quality monitoring prohibits the penetration of this technology into an extensive practice .
 concept or principle: quality; concept or principle: penetration; concept or principle: technology
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: quality, penetration, technology 
Answer:
 concept or principle: quality; concept or principle: penetration; concept or principle: technology