1456
The building platform can be angled upward and the light source down in some masking machines ( e.g .
 machine or equipment: building platform; material: be; machine or equipment: light source; machine or equipment: masking machines
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:
 machine or equipment: building platform; material: be; machine or equipment: light source; machine or equipment: masking machines