1974
Based on traditional TO methods , discretized version of the density based SIMP method , commercial software providers announced new functions of generative design for AM in their structure design tools and presented a couple of industrial design cases with numerical results .
 machanical property: density; concept or principle: software; enabling technology: generative design; manufacturing process: AM; engineering feature: structure design; application: industrial; engineering feature: design
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:
 machanical property: density; concept or principle: software; enabling technology: generative design; manufacturing process: AM; engineering feature: structure design; application: industrial; engineering feature: design