1970
GD is a set of methods that apply a generative system , rule-based or algorithm-based , to explore the design space and generate candidate solutions for designers .
 material: GD; application: set; concept or principle: design space
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:
 material: GD; application: set; concept or principle: design space