4699
Dissolving the printed wax in oil creates cavities as small as 500 μm within the acrylic monolith .
 material: wax; material: oil; material: as; material: as; material: acrylic
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: wax, oil, as, as, acrylic 
Answer:
 material: wax; material: oil; material: as; material: as; material: acrylic