152
Gypsum may be used as impression material , mold material for processing complete dentures , as binders for silica in gold alloy casting investment , soldering investment , and investment for low-melting-point nickel-chromium alloys .
 material: Gypsum; material: be; material: as; material: material; machine or equipment: mold; material: material; application: dentures; material: as; material: silica; material: gold alloy; manufacturing process: casting; manufacturing process: soldering; concept or principle: low-melting-point; material: alloys
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: Gypsum; material: be; material: as; material: material; machine or equipment: mold; material: material; application: dentures; material: as; material: silica; material: gold alloy; manufacturing process: casting; manufacturing process: soldering; concept or principle: low-melting-point; material: alloys