1332
Many rapid prototyping technologies have appeared on the market based on the same layers manufacturing approach .
 enabling technology: rapid prototyping; manufacturing process: layers manufacturing
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: rapid prototyping, layers manufacturing 
Answer:
 enabling technology: rapid prototyping; manufacturing process: layers manufacturing