118
Nowadays , there is available a third generation of alumina ceramic components , with properties such as high purity , high density and finer microstructure .
 material: alumina ceramic components; concept or principle: properties; material: as; machanical property: density; engineering feature: finer microstructure
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: alumina ceramic components; concept or principle: properties; material: as; machanical property: density; engineering feature: finer microstructure