9358
Nanoparticle-enhanced Al 7075 can be used to make crack-free welds , overlays , and multi-layer parts via arc welding .
 material: Nanoparticle-enhanced Al 7075; material: be; concept or principle: crack-free welds; engineering feature: overlays; manufacturing process: arc welding
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: Nanoparticle-enhanced Al 7075, be, crack-free welds, overlays, arc welding 
Answer:
 material: Nanoparticle-enhanced Al 7075; material: be; concept or principle: crack-free welds; engineering feature: overlays; manufacturing process: arc welding