1550
These concrete houses are built in one day by 3D printing and their construction costs about 3800 $ .
 material: concrete; manufacturing process: 3D printing; application: construction
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: concrete; manufacturing process: 3D printing; application: construction