1340
The stages involved to the product design and the rapid prototyping show that the cycle development is specific .
 engineering feature: product design; enabling technology: rapid prototyping; concept or principle: cycle development
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:
 engineering feature: product design; enabling technology: rapid prototyping; concept or principle: cycle development